This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is an example of static dischage? A) A motor. B) Lightning. C) Thunder. D) Insulators. Show Answer Correct Answer: B) Lightning. 2. This is a complete circuit where everything is connected A) Insulator. B) Conductor. C) Closed circuit. D) Open circuit. Show Answer Correct Answer: C) Closed circuit. 3. When a body has a deficit of n electrons it has A) -ne C. B) Neutral. C) + ne C. D) Cannot predict. Show Answer Correct Answer: C) + ne C. 4. A closed circuit is complete and ..... electrons to flow. A) Allows. B) Does not allow. C) All the above. D) None of the above. Show Answer Correct Answer: A) Allows. 5. A balloon sticks to a wall after being rubbed on hair. This is an example of: A) Current electricity. B) Static electricity. C) Magnetic force. D) Gravitational force. Show Answer Correct Answer: B) Static electricity. 6. The expression for heat energy dissipated, in a current flowing conductor is ..... A) H = I R $t^2$. B) H = I $R^2$. C) H = $I^2$. D) None of the above. Show Answer Correct Answer: C) H = $I^2$. 7. How many volts of electricity comes through a typical wall outlet in your home? A) 9 volts. B) 10, 000 volts. C) 120 volts. D) 60, 000 volts. Show Answer Correct Answer: C) 120 volts. 8. What is the unit for current? A) Amperes. B) Voltage. C) Coulomb's. D) Ohm's. Show Answer Correct Answer: A) Amperes. 9. A portable radio connected to a 9.0 V battery draws a current of 25 A. What is the resistance of the radio? A) 0.036$\Omega$. B) 0.36$\Omega$. C) 3.6$\Omega$. D) 36$\Omega$. Show Answer Correct Answer: B) 0.36$\Omega$. 10. Which device controls the current in the circuit? A) Voltmetre. B) Ammeter. C) Galvanometer. D) Resistance. Show Answer Correct Answer: D) Resistance. 11. ..... wire creates more resistance. A) Thicker. B) Thinner. C) All the above. D) None of the above. Show Answer Correct Answer: B) Thinner. 12. In India electricity is supplied for domestic use at 220 V. It is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in India is R, the resistance of the same bulb in USA will be A) R. B) 2R. C) R/4. D) R/2. Show Answer Correct Answer: C) R/4. 13. If a current of 10 amperes flows through a 230 volt lamp, what is its resistance? A) 2300 ohms. B) 23 ohms. C) 23 ohms. D) None of the above. Show Answer Correct Answer: B) 23 ohms. 14. Which of the following electrical meter has the smallest resistance? A) Ammeter. B) Milliammeter. C) Voltmeter. D) Galvanometer. Show Answer Correct Answer: A) Ammeter. 15. The maximum electric field that a dielectric medium can withstand without breakdown is called A) Permittivity. B) Dielectric constant. C) Dielectric strength. D) None of the above. Show Answer Correct Answer: C) Dielectric strength. 16. When a current is passed in conductor, 3 $^{0}$C rise in temprature is observed. If the strength ofcurrent is made thrice, then rise in the temprature will approximtley be A) 36$^{o}$C. B) 27$^{o}$C. C) 18$^{o}$C. D) 9$^{o}$C. Show Answer Correct Answer: B) 27$^{o}$C. 17. Static electricity is: A) Electricity flowing in a wire. B) The buildup of electric charges on an object. C) When protons move between objects. D) None of the above. Show Answer Correct Answer: B) The buildup of electric charges on an object. 18. In an incomplete circuit, the light bulb would be lit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. When is the Wheatstone bridge is most sensitive? A) When all the four resistances of the bridge are equal. B) When the bridge is balanced. C) When high amount of current is flowing through the bridge. D) When a very low amount of current is flowing through the bridge. Show Answer Correct Answer: A) When all the four resistances of the bridge are equal. 20. In a ..... circuit, if one light bulb goes out, all light bulbs will go out. A) Parallel. B) Series. C) Partial. D) Closed. Show Answer Correct Answer: B) Series. 21. The SI Unit of electric current is the ..... A) Ampere. B) Volt. C) Coulumb. D) Electricity. Show Answer Correct Answer: A) Ampere. 22. A current of 2.0 A is produced when 500 C flow from X to Y in a circuit.Calculate the time taken for 500 C to move from X to Y. A) 0.0040 s. B) 250 s. C) 1000 s. D) None of the above. Show Answer Correct Answer: B) 250 s. 23. If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb? A) 5 V. B) 12 V. C) 0.2 V. D) 20 V. Show Answer Correct Answer: D) 20 V. 24. A cell supplies a current of 0.9 A through a 2 ohm, resistor and a current of 0.3A through a 7 ohm resistor. The internal resistance of the cell is A) 2 ohm. B) 1.5 ohm. C) 1 ohm. D) 0.5 ohm. Show Answer Correct Answer: D) 0.5 ohm. 25. The instrument for the accurate determination of the emf of the cell is A) Voltmeter. B) Ammeter. C) Potentiometer. D) Slide wire bridge. Show Answer Correct Answer: C) Potentiometer. ← PreviousNext →Related QuizzesClass 12 Physics (Part I) Chapter 3 Current Electricity Quiz 1Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 2Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 3Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 4Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 5Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 6Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 7Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 8Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 9Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books