This quiz works best with JavaScript enabled. Home > Class 10 > 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 (25 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) A compass is used to detect current. C) The wire has a magnetic field around it because of the moving electrons. D) The compass moves to point to the batteries. 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) Poles. B) Equator. C) Mountain tops. D) Ocean floor. Show Answer Correct Answer: A) 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) Lenz's law. D) Faraday's law. Show Answer Correct Answer: C) Lenz's law. 7. In which year oersted discovered electromagnetism? A) 1980. B) 1820. C) 1850. D) 1890. Show Answer Correct Answer: B) 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) Galvanometer. B) Ammeter. C) Voltmeter. D) Motor. Show Answer Correct Answer: A) Galvanometer. 10. What is the SI unit of Magnetic Field A) Tesla. B) Ohm. C) Rho. D) Ampere. Show Answer Correct Answer: A) Tesla. 11. What is the function of an earth wire? Why is it necessary to earth metallic appliances? A) To decrease potential difference. B) To increase current flow. C) To reduce the magnetic field. D) To provide a low-resistance conducting path for current. Show Answer Correct Answer: D) 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) Earthing. B) Use of stabilizers. C) Use of fuse. D) Use of electric meter. Show Answer Correct Answer: C) 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 reverse the direction of flow of electric current. B) To increase the speed of the generator. C) To decrease the speed of the generator. D) To control the temperature of the generator. Show Answer Correct Answer: A) 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) The direction of the field. C) The direction of current as well as field. D) Neither the direction of current nor the direction of field. Show Answer Correct Answer: C) The direction of current as well as field. 16. Iron bar is attracted towards a magnet this indicates that iron bar. A) Is charged. B) Is magnetized. C) Is unmagnetized. D) May or may not be magnetized. Show Answer Correct Answer: B) 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) 20 kW h. B) 2000 kW h. C) 600 kW h. D) 420 kW h. Show Answer Correct Answer: C) 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) South, north. B) North, south. C) North, north. D) South, south. Show Answer Correct Answer: B) 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 meters/amps. B) Tesla meter/Volts. C) Tesla ampere/meter. D) Tesla meter/second. Show Answer Correct Answer: A) 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) Voltmeter. B) Galvanometer. C) Generator. D) Ammeter. Show Answer Correct Answer: C) Generator. 25. The device used for producing current is called a: A) Galvanometer. B) Ammeter. C) Motor. D) Generator. Show Answer Correct Answer: D) Generator. Next →Related 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 5Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 6Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 7Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 8Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 9Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 10Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books