This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Magnetic Effects Of Electric Current > Class 10 Science Chapter 13 Magnetic Effects Of Electric Current – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the use of earth wire? A) The earth wire is used for decorative purposes in electrical installations. B) The earth wire is used to increase energy efficiency in electrical installations. C) The earth wire is used to transmit data in electrical installations. D) The earth wire is used for safety purposes in electrical installations. Show Answer Correct Answer: D) The earth wire is used for safety purposes in electrical installations. 2. Any current carrying wires produce A) Electricity. B) Magnetic filed. C) Electromagnetic waves. D) None of the above. Show Answer Correct Answer: B) Magnetic filed. 3. A compass moves to point to an wire with current running in it because A) The compass is attracted to the metal wire itself. B) The compass moves to point to the batteries. C) The wire has a magnetic field around it because of the moving electrons. D) A compass is used to detect current. Show Answer Correct Answer: C) The wire has a magnetic field around it because of the moving electrons. 4. Where is Earth's magnetic field the strongest? A) Mountain tops. B) Ocean floor. C) Equator. D) Poles. Show Answer Correct Answer: D) Poles. 5. The magnetic field is the strongest at A) Middle of the magnet. B) North pole. C) South pole. D) Both poles. Show Answer Correct Answer: D) Both poles. 6. Which law states that the direction of the induced current is such that it always opposes the cause (motion of conductor) which produced it? A) Ampere's law. B) Ohm's law. C) Faraday's law. D) Lenz's law. Show Answer Correct Answer: D) Lenz's law. 7. In which year oersted discovered electromagnetism? A) 1890. B) 1980. C) 1820. D) 1850. Show Answer Correct Answer: C) 1820. 8. Tesla is the unit of A) Electric field. B) Magnetic field. C) Force per unit length. D) Work per unit length. Show Answer Correct Answer: B) Magnetic field. 9. The device which is used to detect small magnitudes of current is ..... A) Voltmeter. B) Galvanometer. C) Motor. D) Ammeter. Show Answer Correct Answer: B) Galvanometer. 10. What is the SI unit of Magnetic Field A) Ohm. B) Ampere. C) Tesla. D) Rho. Show Answer Correct Answer: C) Tesla. 11. What is the function of an earth wire? Why is it necessary to earth metallic appliances? A) To provide a low-resistance conducting path for current. B) To increase current flow. C) To decrease potential difference. D) To reduce the magnetic field. Show Answer Correct Answer: A) To provide a low-resistance conducting path for current. 12. The most important safety method used for protecting home appliances from short-circuiting or Overloading is A) Use of fuse. B) Use of stabilizers. C) Use of electric meter. D) Earthing. Show Answer Correct Answer: A) Use of fuse. 13. When does an electric short circuit occur? A) When the live wire and neutral wire come into direct contact. B) When the current is too high. C) When the circuit is turned off. D) When the current is too low. Show Answer Correct Answer: A) When the live wire and neutral wire come into direct contact. 14. What is the purpose of a split-ring commutator in an electric generator? A) To control the temperature of the generator. B) To increase the speed of the generator. C) To reverse the direction of flow of electric current. D) To decrease the speed of the generator. Show Answer Correct Answer: C) To reverse the direction of flow of electric current. 15. The direction of the force on a current-carrying wire placed in a magnetic field depends on A) The direction of the current. B) Neither the direction of current nor the direction of field. C) The direction of the field. D) The direction of current as well as field. Show Answer Correct Answer: D) The direction of current as well as field. 16. Iron bar is attracted towards a magnet this indicates that iron bar. A) Is unmagnetized. B) May or may not be magnetized. C) Is charged. D) Is magnetized. Show Answer Correct Answer: D) Is magnetized. 17. At the time of short circuit the current in the circuit A) Reduces substantially. B) Does not change. C) Increases heavily. D) Varies continuously. Show Answer Correct Answer: C) Increases heavily. 18. An air conditioner is rated 260 V, 2.0 kW. The air conditioner is switched on for 10 hours each day. What is electrical energy consumed in 30 days? A) 2000 kW h. B) 600 kW h. C) 420 kW h. D) 20 kW h. Show Answer Correct Answer: B) 600 kW h. 19. The strength of magnetic field inside a long current carrying straight solenoid is A) More at the ends than at the centre. B) Minimum in the middle. C) Same at all points. D) Found to increase from one end to the other. Show Answer Correct Answer: C) Same at all points. 20. Magnetic field lines emerge from ..... pole and merge at ..... pole A) North, south. B) North, north. C) South, north. D) South, south. Show Answer Correct Answer: A) North, south. 21. Magnetic field is a quantity that has- A) Direction. B) Magnitude. C) Both direction and magnitude. D) None of the above. Show Answer Correct Answer: C) Both direction and magnitude. 22. What is formula for magnetic field? A) Tesla meter/Volts. B) Tesla ampere/meter. C) Tesla meter/second. D) Tesla meters/amps. Show Answer Correct Answer: D) Tesla meters/amps. 23. Which of the following deflects in the presence of a magnetic field A) Ammeter. B) Galvanometer. C) Compass. D) Both 2 and 3. Show Answer Correct Answer: C) Compass. 24. What is the device used for generating electric currents? A) Galvanometer. B) Voltmeter. C) Generator. D) Ammeter. Show Answer Correct Answer: C) Generator. 25. The device used for producing current is called a: A) Galvanometer. B) Motor. C) Ammeter. D) Generator. Show Answer Correct Answer: D) Generator. 26. The area around a magnet in which its influence can be felt is called its A) Magnetic field. B) Magnetic strength. C) Magnetic intensity. D) Magnetic power. Show Answer Correct Answer: A) Magnetic field. 27. State whether the following statements are true or false. (a) The field at the centre of a long circular coil carrying current will be parallel straight lines. A) Cannot be determined. B) False. C) True. D) Partially true. Show Answer Correct Answer: B) False. 28. Which of the following components forms a difference between DC and AC generators? A) Coil. B) Magnet. C) Split ring. D) Carbon Brushes. Show Answer Correct Answer: C) Split ring. 29. The magnetic field inside a solenoid is A) Zero. B) Non-uniform. C) Uniform. D) None. Show Answer Correct Answer: C) Uniform. 30. What happens to a compass needle when it is brought near a bar magnet? A) It remains stationary. B) It gets deflected. C) It gets attracted to the magnet. D) It breaks. Show Answer Correct Answer: B) It gets deflected. 31. Why don't two magnetic field lines intersect each other? A) Because they are invisible. B) Because it would imply the magnetic field has two different directions at that point. C) Because they are always parallel. D) Because they repel each other. Show Answer Correct Answer: B) Because it would imply the magnetic field has two different directions at that point. 32. An electric fan rated 50 W operates 20 hours in a day. What is the cost of the energy to operate it for 30 days at Rs. 2 per kWh? A) Rs. 70. B) Rs. 80. C) Rs. 50. D) Rs. 60. Show Answer Correct Answer: D) Rs. 60. 33. A positive charge is moving towards a person. The direction of magnetic field lines will be in A) Clockwise direction. B) Anticlockwise direction. C) Vertically upward direction. D) Vertically downward direction. Show Answer Correct Answer: B) Anticlockwise direction. 34. According to right hand thumb rule the direction of magnetic field in a current carrying circular coil is denoted by A) Thumb. B) Curl finger. C) First finger. D) Middle finger. Show Answer Correct Answer: A) Thumb. 35. At which angle between the current carrying wire and the magnetic field is the force found to be highest? A) 180 degrees. B) 0 degrees. C) 45 degrees. D) 90 degrees. Show Answer Correct Answer: D) 90 degrees. 36. The magnet field adds up if A) Heat increases. B) Wire increases. C) Turn increases. D) All of the above. Show Answer Correct Answer: C) Turn increases. 37. What is the direction of the magnetic field at the top of a circular current carrying loop? A) Clockwise. B) Anti-clockwise. C) Parallel to the loop. D) Perpendicular to the loop. Show Answer Correct Answer: A) Clockwise. 38. What is the purpose of an electric fuse in a circuit? A) To prevent overloading. B) To increase the current. C) To enhance magnetic fields. D) To measure voltage. Show Answer Correct Answer: A) To prevent overloading. 39. The north-south polarities of an electromagnet can be found easily by using A) Fleming's right-hand rule. B) Fleming's left-hand rule. C) Clock face rule. D) Left-hand thumb rule. Show Answer Correct Answer: C) Clock face rule. 40. The strength of magnetic field around a current carrying conductor is A) Inversely proportional to the current but directly proportional to the square of the distance from wire. B) Directly proportional to the current and inversely proportional to the distance from wire. C) Directly proportional to the distance and inversely proportional to the current. D) Directly proportional to the current but inversely proportional to the square of the distance from wire. Show Answer Correct Answer: B) Directly proportional to the current and inversely proportional to the distance from wire. 41. Which of the following statements is true of Faraday's laws of electromagnetic induction? A) Whenever magnetic flux linked with a circuit changes, induced e.m.f is produced. B) The induced e.m.f lasts as long as the change in the magnetic flux continues. C) The magnitude of the induced e.m.f is directly proportional to the rate of change of the magnetic flux linked with the circuit. D) All of the above. Show Answer Correct Answer: D) All of the above. 42. The relative strength of the magnetic field is shown by the degree of closeness of the field lines. A) False. B) True. C) Can't say. D) None of the above. Show Answer Correct Answer: B) True. 43. An electric generator converts A) Electrical energy into mechanical energy. B) Mechanical energyinto electrical energy. C) Electrical energy into chemical energy. D) None. Show Answer Correct Answer: B) Mechanical energyinto electrical energy. 44. In which property of magnet, a freely suspended magnet always points in a north-south direction? A) Attractive Property. B) Directive Property. C) Magnetic Field. D) Repulsive Property. Show Answer Correct Answer: B) Directive Property. 45. Fleming left hand rule gives the direction of: A) Magnetic field. B) Induced Current. C) Current. D) Motion (Force). Show Answer Correct Answer: D) Motion (Force). 46. A beam of electrons and protons move parallel to each other in the same direction, then they A) Attract each other. B) Repel each other. C) Neither attract nor repel. D) No relation. Show Answer Correct Answer: A) Attract each other. 47. An A C generator converts A) Electrical energy into mechanical energy. B) Mechanical energy into Electrical energy. C) Generates energy. D) None. Show Answer Correct Answer: B) Mechanical energy into Electrical energy. 48. Moving magnet inside a conducting coil can generate- A) Electric current. B) Potential difference. C) Deflection in galvanometer. D) All of the above. Show Answer Correct Answer: D) All of the above. 49. A:-Magnetic field produced our body is very weakR:-and it is about one Billionth of earth's magnetic field A) Both A and R are correct and R is correct explaination of A. B) Both A and R are correct but R is not correct explaination of A. C) A is true but R is false. D) Both A And R are false. Show Answer Correct Answer: B) Both A and R are correct but R is not correct explaination of A. 50. What is the principle behind an electric motor? A) Conversion of heat energy to electrical energy. B) Conversion of electrical energy to mechanical energy. C) Conversion of electrical energy to heat energy. D) Conversion of mechanical energy to electrical energy. Show Answer Correct Answer: B) Conversion of electrical energy to mechanical energy. 51. What is the pattern of magnetic field lines at the center of a current carrying solenoid: A) Straight lines. B) Radial lines. C) Curved lines. D) Concentric rings. Show Answer Correct Answer: A) Straight lines. 52. Which are the characteristics of fuse element? A) High conductivity. B) Low melting point. C) Do not burn due to oxidation. D) All of the above. Show Answer Correct Answer: B) Low melting point. 53. The direction of force acting on a current carrying conductor kept in a magnetic field is given by A) Fleming's right hand rule. B) Fleming's left hand rule. C) Clock face rule. D) Right hand thumb rule. Show Answer Correct Answer: B) Fleming's left hand rule. 54. Which rule is used to determine the direction of magnetic field of a straight current carrying wire? A) Fleming's left hand rule. B) Fleming's right hand rule. C) Maxwell's left hand thumb rule. D) Maxwell's right hand thumb rule. Show Answer Correct Answer: D) Maxwell's right hand thumb rule. 55. A soft iron bar is introduced inside a current carrying solenoid. The magnetic field inside the solenoid A) Will remain unaffected. B) Will decrease. C) Will become zero. D) Will increase. Show Answer Correct Answer: D) Will increase. 56. Magnetic field is maximum: A) At one pole. B) At The center of the magnet. C) At Two Poles. D) Outside the magnet. Show Answer Correct Answer: C) At Two Poles. 57. An electromagnet can be made with a coil of wire around a nail if A) The wire is magnetized by a compass. B) The wire is touching 2 magnet. C) The wire has a current running through it. D) The nail is touching a battery on the anode. Show Answer Correct Answer: C) The wire has a current running through it. 58. For what gadgets earth wire is used A) High voltage gadgets. B) Low voltage gadgets. C) Gadgets which are important and cosltylike ac, fridge. D) Gadgets with mettalic body. Show Answer Correct Answer: D) Gadgets with mettalic body. 59. North pole of a magnetic is otherwise known as A) North south pole. B) North seeking pole. C) Both a and b. D) None of the above. Show Answer Correct Answer: B) North seeking pole. 60. A bar magnet is placed in the north south direction with its north pole towards north. In which direction from the center of the magnet will the points of zero magnetic field lie? A) North and south. B) North east and south west. C) East and west. D) North west and south west. Show Answer Correct Answer: D) North west and south west. Next →Related QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 2Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 3Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 4Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books