This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 12 Electricity – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 12 Electricity Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For resistors connected in parallel, the effective resistance is A) The sum of the individual resistance. B) The sum of the reciprocal of the individual resistance. C) The product of the individual resistance. D) The product of the reciprocal of the individual resistance. Show Answer Correct Answer: B) The sum of the reciprocal of the individual resistance. 2. . If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be A) 100 %. B) 200 %. C) 300 %. D) 400 %. Show Answer Correct Answer: C) 300 %. 3. Voltage is the measure of the ..... A) Difference in electrical energy between 2 parts of a circuit. B) Amount of electric charge that flows through a circuit. C) All the above. D) None of the above. Show Answer Correct Answer: A) Difference in electrical energy between 2 parts of a circuit. 4. JJ Thomson did the electron naming in what year A) 1895. B) 1896. C) 1897. D) 1898. Show Answer Correct Answer: C) 1897. 5. Tingston's point is a dirty A) 3000. B) 3300. C) 3380. D) 4000. Show Answer Correct Answer: C) 3380. 6. 8. The relation between potential difference (V) and current (I) is: A) V a i2. B) V $\alpha$ 1/I. C) V2 $\alpha$ I. D) V $\alpha$ I. Show Answer Correct Answer: D) V $\alpha$ I. 7. A resistance wire is stretched so as to increase it's length 3 times. The resistance of the wire after stretching A) Decreases 3 times. B) Increases 3 times. C) Decreases 9 times. D) Increases 9 times. Show Answer Correct Answer: D) Increases 9 times. 8. A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly A) 10 $^{20}$. B) 10$^{ 16}$. C) 10$^{ 18 }$. D) 10 $^{2}$. Show Answer Correct Answer: A) 10 $^{20}$. 9. Which of the following substances is the best conductor of electricity? A) Glass. B) Wood. C) Water. D) Mercury. Show Answer Correct Answer: D) Mercury. 10. Identify the conductor below. A) Cloth rag. B) Plastic bottle. C) Gold ring. D) None of the above. Show Answer Correct Answer: C) Gold ring. 11. A charge of 60 coulomb flows through a bulb in 5 minutes what is the current through the bulb? A) 2 A. B) 0.2 A. C) 12 A. D) 0.12 A. Show Answer Correct Answer: B) 0.2 A. 12. What is voltage? A) Flow of electrical charge. B) Pressure from power to push electrons. C) Limits the flow of electrons. D) None of the above. Show Answer Correct Answer: B) Pressure from power to push electrons. 13. What is the relationship between current, voltage, and resistance in an electrical circuit? A) Current is equal to voltage divided by resistance. B) Voltage is equal to current divided by resistance. C) Resistance is equal to current divided by voltage. D) Current is equal to resistance divided by voltage. Show Answer Correct Answer: A) Current is equal to voltage divided by resistance. 14. A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor? A) 0.15 A. B) 3600 A. C) 6.25 A. D) 0.16 A. Show Answer Correct Answer: D) 0.16 A. 15. The resistance of a thin wire is more than that of a thick wire of the same length and same material. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. SI unit of current is A) Ampere. B) Ohms. C) Volts. D) Coulomb. Show Answer Correct Answer: A) Ampere. 17. What happens when two north poles of a magnet are placed together? A) They repel. B) They attract. C) They cancel each other out. D) The strength of the magnet is doubled. Show Answer Correct Answer: A) They repel. 18. The product of potential difference and electric current is A) Charge, Q. B) Resistance, R. C) Electric energy, E. D) Electric Power, P. Show Answer Correct Answer: D) Electric Power, P. 19. As the resistance in a circuit increases, the electric current ..... A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Decreases. 20. In an electrical circuit three incandescent bulbs A, B and C of rating 40 W, 60 W and 100 W respectively are connected in parallel to an electric source. Which of the following is likely to happen regarding their brightness? A) Brightness of all the bulbs will be the same. B) Brightness of bulb A will be the maximum. C) Brightness of bulb B will be more than that of A. D) Brightness of bulb C will be less than that of B. Show Answer Correct Answer: C) Brightness of bulb B will be more than that of A. 21. Which of the following is the SI unit for electric current? A) Ohm. B) Watt. C) Ampere. D) Volt. Show Answer Correct Answer: C) Ampere. 22. What is the commercial unit of electrical energy? A) Joules. B) Kilojoules. C) Kilowatt-hour. D) Watt-hour. Show Answer Correct Answer: C) Kilowatt-hour. 23. Metal with highest resistivity A) Silver. B) Copper. C) Gold. D) Mercury. Show Answer Correct Answer: D) Mercury. 24. Which of the following makes use of series grouping of resistors? A) Various electrical points in a room. B) Fairy lights to decorate. C) Different electrical gadgets in a house. D) None of these. Show Answer Correct Answer: B) Fairy lights to decorate. 25. A simple circuit comprises of, conductors, switch, load and? A) Voltmeter. B) Ammeter. C) Cell. D) Resistor. Show Answer Correct Answer: C) Cell. ← 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 4Class 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 9Class 10 Science Chapter 12 Electricity Quiz 10Class 10 Science Chapter 12 Electricity Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books