This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 12 Electricity – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 12 Electricity Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How much work is done in moving a charge of 2C across 2 points having a potential difference? A) 20 J. B) 23 J. C) 21 J. D) 24 J. Show Answer Correct Answer: D) 24 J. 2. The formula of the electric stream A) I = t/Q. B) I = Q/t. C) Q = I/t. D) T = qi. Show Answer Correct Answer: B) I = Q/t. 3. An electric heater is rated at 2 Kw. Electrical energy costs Rs 4 per k Wh. What is the cost of using the heater for 3 hours? A) 12. B) 24. C) 36. D) 48. Show Answer Correct Answer: B) 24. 4. Conduction is the process of charging an object without touching it. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. Its rods when the carrier heats up A) Does not change. B) Will be reduced. C) Will increase. D) First increases afterwards. Show Answer Correct Answer: C) Will increase. 6. If a net charge Q, flows across any cross-section of a conductor in time t, then the current I, through the cross-section is A) Q=I/t. B) I=Q/t. C) I=Qt. D) None of these. Show Answer Correct Answer: B) I=Q/t. 7. Which of the following is true about a bar magnet? A) Its magnetic field is strongest near its center. B) It is surrounded by a magnetic field. C) The north pole is stronger than the south pole. D) The south pole is stronger than the north pole. Show Answer Correct Answer: B) It is surrounded by a magnetic field. 8. If the current in a circuit is 10 amps and the resistance is 3 ohms, what is the voltage? A) 30V. B) Z. C) 0. D) None of the above. Show Answer Correct Answer: A) 30V. 9. What is Ohm's Law? A) Ohm's Law states that R = V / I. B) Ohm's Law is V = I * R. C) Ohm's Law is I = V + R. D) Ohm's Law defines power as P = I / R. Show Answer Correct Answer: B) Ohm's Law is V = I * R. 10. An electric fuse works on the: A) Chemical effect of current. B) Magnetic effect of current. C) Lighting effect of current. D) Heating effect of current. Show Answer Correct Answer: D) Heating effect of current. 11. An example of a voltage source is a ..... A) Voltmeter. B) Battery. C) Resistance. D) Switch. Show Answer Correct Answer: B) Battery. 12. Bulbs in street lighting are all connected in A) Parallel. B) Series. C) Series-Parallel. D) End to end. Show Answer Correct Answer: A) Parallel. 13. What is called the difference of charges at the two ends of the conductive wire A) Electric power. B) Electric current. C) Disintegration. D) Electric. Show Answer Correct Answer: C) Disintegration. 14. When 'n' number of resistors are connected in parallel, the effective resistance for parallel is A) N. B) NR. C) R/n. D) None. Show Answer Correct Answer: C) R/n. 15. How can you calculate the equivalent resistance of two resistors in series? A) R eq = R1-R2. B) R eq = R1 * R2. C) R eq = R1 / R2. D) R eq = R1 + R2. Show Answer Correct Answer: D) R eq = R1 + R2. 16. What is the unit of resistance? A) Joule. B) Ohm. C) Watt. D) Volt. Show Answer Correct Answer: B) Ohm. 17. Two resistances of 100 ohm and 0 ohm are connected in parallel. The overall resistance will be A) 100. B) 50. C) 25. D) 0. Show Answer Correct Answer: D) 0. 18. A wire of resistance 20 ohm is bent to form a regular pentagon ABCDE. what will be the resistance between the points A and B A) 16 ohm. B) 20 ohm. C) 1.6 ohm. D) 3.2 ohm. Show Answer Correct Answer: D) 3.2 ohm. 19. SI UNIT OF RESISTANCE A) Volt. B) Ampere. C) Ohm. D) Coulomb. Show Answer Correct Answer: C) Ohm. 20. Manganin is an alloy of:A. CopperB. ManganeseC. NickelD. Platinum A) A and C. B) All of these. C) A and B. D) A, B and C. Show Answer Correct Answer: D) A, B and C. 21. In a parallel circuit, the total current is: A) The sum of individual currents. B) The product of individual currents. C) Equal to the smallest current. D) Equal to the largest current. Show Answer Correct Answer: A) The sum of individual currents. 22. The power fuse is based on what rule A) Juna. B) Oman. C) The rule of the rage. D) The rule of electric current. Show Answer Correct Answer: A) Juna. 23. Commercial unit of electric energy is A) Joule. B) Watt. C) Joule-hour. D) Kilowatt hour. Show Answer Correct Answer: D) Kilowatt hour. 24. Thicker wires have ..... resistance than thinner wires. A) More. B) Less. C) The same. D) None of the above. Show Answer Correct Answer: B) Less. 25. A component of an electrical flood A) Electric. B) Electricity. C) Electric current. D) Disintegration. Show Answer Correct Answer: A) Electric. ← PreviousNext →Related QuizzesClass 10 Science Chapter 12 Electricity Quiz 1Class 10 Science Chapter 12 Electricity Quiz 2Class 10 Science Chapter 12 Electricity Quiz 3Class 10 Science Chapter 12 Electricity Quiz 5Class 10 Science Chapter 12 Electricity Quiz 6Class 10 Science Chapter 12 Electricity Quiz 7Class 10 Science Chapter 12 Electricity Quiz 8Class 10 Science Chapter 12 Electricity Quiz 9Class 10 Science Chapter 12 Electricity Quiz 10Class 10 Science Chapter 12 Electricity Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books