This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 13 Magnetic Effects Of Electric Current – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Voltage is simply defined as ..... A) What 'pushes' electrons. B) What 'stops' electrons. C) Moving electrons. D) None of the above. Show Answer Correct Answer: A) What 'pushes' electrons. 2. An electric oven of 2 kW power rating is operated in a domestic electric circuit (220 V) that has a current rating of 5 A. What result do you expect? Explain. A) The oven will not operate properly and may cause the circuit breaker to trip. B) The current rating of the circuit will increase to accommodate the oven. C) The circuit will experience a power surge and damage the oven. D) The oven will operate more efficiently due to the high power rating. Show Answer Correct Answer: A) The oven will not operate properly and may cause the circuit breaker to trip. 3. The use of fuse is A) To control the voltage. B) To supply high current in case of overloading. C) To supply high current in case of short circuit. D) To stop the supply of current in case of overloading or short circuit. Show Answer Correct Answer: D) To stop the supply of current in case of overloading or short circuit. 4. The magnetic field lines due to a straight wire carrying a current are A) Straight. B) Circular. C) Parabolic. D) Elliptical. Show Answer Correct Answer: B) Circular. 5. The laws of electrolysis and electromagnetic induction was discovered by- A) Hans Christian Oersted. B) Stephen Hawking. C) Albert Einstein. D) Michael Faraday. Show Answer Correct Answer: D) Michael Faraday. 6. The magnetic effect of current was discoverd by A) Fleming. B) Maxwell. C) Oasted. D) None of the above. Show Answer Correct Answer: C) Oasted. 7. In right hand thumb rule, thumb indicates what A) Magnetic field. B) Direction flow of electrons. C) Directrion of current. D) Force. Show Answer Correct Answer: C) Directrion of current. 8. What happens to the magnetic feild when no current is passed A) The iron fillings assemble in concentric cirles. B) Compass needle gets deflected. C) Both a and b. D) There would be no magnetic field. Show Answer Correct Answer: D) There would be no magnetic field. 9. When current flows from South to North, magnetic needle will be deflected towards A) East. B) West. C) All the above. D) None of the above. Show Answer Correct Answer: B) West. 10. A length of the wire carries a steady current. It is bent first to form a circular plane coil of one turn.The same length is now bent more sharply to give a double loop of the smaller radius.The magnetic field at the center caused by the same current is A) A quarter of its first value. B) Un altered. C) Four times its first value. D) A half of its first value. Show Answer Correct Answer: C) Four times its first value. 11. Red insulation covered wire represents A) Live wire. B) Neutral wire. C) Earth wire. D) Copper wire. Show Answer Correct Answer: A) Live wire. 12. What is a short circuit? A) A short circuit is when an electrical current flows in reverse. B) A short circuit is when an electrical current flows in an unintended path desired by the user. C) A short circuit is when the live wire and neutral wire come in direct contact increasing the flow of current. D) A short circuit is when a circuit is too long to function properly and provides high voltage to an appliance. Show Answer Correct Answer: C) A short circuit is when the live wire and neutral wire come in direct contact increasing the flow of current. 13. Is magnetic field a scalar quantity or vector quantity? A) Scalar. B) Vector. C) Both. D) None. Show Answer Correct Answer: B) Vector. 14. What is the direction of force on a current carrying conductor if the direction of current is reversed? A) Remains the same. B) Reversed. C) Becomes zero. D) Depends on the strength of the current. Show Answer Correct Answer: B) Reversed. 15. If the key in the arrangement (Figure 13.1) is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are A) Concentric circles. B) Elliptical in shape. C) Straight lines parallel to each other. D) Concentric circles near the point O but of elliptical shapes as we go away from it. Show Answer Correct Answer: A) Concentric circles. 16. Fuse wire has high melting point. True or False: A) True. B) False. C) May be false. D) May be correct. Show Answer Correct Answer: B) False. 17. Which of the following is not attracted by a magnet? A) Steel. B) Cobalt. C) Brass. D) Nickel. Show Answer Correct Answer: C) Brass. 18. The relative strength of a magnetic field is shown by- A) Thickness of the magnet. B) Weight of the magnet. C) Closeness of the field lines. D) None of the above. Show Answer Correct Answer: C) Closeness of the field lines. 19. The electric device which works on the phenomena of force on a current carrying conductor in a magnetic field is A) Generator. B) Accelerator. C) Motor. D) Transformer. Show Answer Correct Answer: C) Motor. 20. No two field-lines are found to cross each other. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. What precaution should be taken to avoid the overloading of domestic electric circuits? A) Distribute load evenly, avoid using multiple high-power appliances simultaneously, unplug devices when not in use, and check for loose connections or faulty wiring. B) Connect multiple high-power appliances to the same outlet. C) Ignore warning signs of overheating. D) Use extension cords for all appliances. Show Answer Correct Answer: A) Distribute load evenly, avoid using multiple high-power appliances simultaneously, unplug devices when not in use, and check for loose connections or faulty wiring. 22. What is the effect of increasing the current in a wire on the deflection of a compass needle placed nearby? A) The compass needle stops working. B) The deflection decreases. C) The deflection remains the same. D) The deflection increases. Show Answer Correct Answer: D) The deflection increases. 23. An electrical oven of 2 kw power rating is operated in adomestic cirruit that has a current rating of 5 A.WHAT WILL HAPPEN A) It will work. B) It will blast. C) The equipment and socket will be damaged. D) It will not wotk. Show Answer Correct Answer: D) It will not wotk. 24. List two methods of producing magnetic fields. A) Electricity and heat. B) Friction and pressure. C) Light and sound. D) Electric current and magnets. Show Answer Correct Answer: D) Electric current and magnets. 25. Fleming's right hand rule is used in A) Motor. B) Generator. C) None. D) None of the above. Show Answer Correct Answer: B) Generator. ← PreviousNext →Related QuizzesClass 10 Science Chapter 13 Magnetic Effects Of Electric Current Quiz 1Class 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 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