This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the unit for voltage? A) Volts. B) Amperes (amps). C) Ohms. D) Watts. Show Answer Correct Answer: A) Volts. 2. This unit tells you how much energy is carried by each charged particle. A) Joules (J). B) Volts (V). C) Amperes (A). D) Ohms ($\Omega$). Show Answer Correct Answer: B) Volts (V). 3. Materials that do not obey ohm's law are said to be ..... material. A) Ohmic. B) Non-Ohmic. C) Zero. D) Conductor. Show Answer Correct Answer: B) Non-Ohmic. 4. A current of 3.0 A flows in a wire connected to the terminals of a battery.Calculate the total electric charge which passes through the circuit in 5.0 minutes. A) 0.10 C. B) 0.60 C. C) 15 C. D) 900 C. Show Answer Correct Answer: D) 900 C. 5. What is the term for the resistance offered by the electrolyte inside a cell? A) Terminal resistance. B) Internal resistance. C) External resistance. D) Electromotive resistance. Show Answer Correct Answer: B) Internal resistance. 6. A steady current flows in a metallic conductor of non-uniform cross section. The quantity/quantities constant along the length of the conductor is/are: A) Drift speed only. B) Current, electric field and drift speed. C) Current and drift speed. D) Current only. Show Answer Correct Answer: D) Current only. 7. To supply maximum current, cells should be arranged in A) Series. B) Parallel. C) Mixed grouping. D) Depends on the internal and external resistance. Show Answer Correct Answer: A) Series. 8. Zero is never the first significant digit A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Which of the following produces current to an electrical circuit? A) Wire. B) Battery. C) Switch. D) Light bulb. Show Answer Correct Answer: B) Battery. 10. Which of these colors is NOT used in the resistor value color code? A) White. B) Black. C) Violet. D) Pink. Show Answer Correct Answer: D) Pink. 11. This allows only one path for the electrons to flow: A) Conductor. B) Insulator. C) Parallel circuit. D) Series circuit. Show Answer Correct Answer: D) Series circuit. 12. Which of the following is NOT required for a circuit to be complete. A) Load. B) Power Source. C) Conductor. D) Switch. Show Answer Correct Answer: D) Switch. 13. The loop that electricity follows A) Static. B) Electrons. C) Circuit. D) Terminal. Show Answer Correct Answer: C) Circuit. 14. I allow electricity to run through me easily. A) Fuse. B) Conductor. C) Insulator. D) Electric circuit. Show Answer Correct Answer: B) Conductor. 15. An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, power consumed will be ..... [Use P = V$^{2}$/R] A) 100 W. B) 75 W. C) 50 W. D) 25 W. Show Answer Correct Answer: D) 25 W. 16. What is the primary function of a resistor in an electrical circuit? A) To increase the current. B) To decrease the voltage. C) To limit the current. D) To store electrical energy. Show Answer Correct Answer: C) To limit the current. 17. In a series circuit, if one receiver is disconnected, nothing will work. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. How are magnetic fields produced in an electromagnet? A) A battery is placed next to the iron core. B) Iron filings are sprinkled around the iron core. C) An electric current is being sent through a wire. D) The iron core was placed next to an existing magnet. Show Answer Correct Answer: C) An electric current is being sent through a wire. 19. Place the following events in sequence:A) Voltage is increased by a transformer; B) Voltage is decreased by a transformer; C) Electrical current enters your home A) A, B, C. B) B, A, C. C) A, C, B. D) B, C, A. Show Answer Correct Answer: A) A, B, C. 20. Why does opening a switch in an electric circuit stop the flow of current? A) Charges can't flow through a broken path. B) The magnetic domain is interrupted. C) The magnetic field disappears. D) None of the above. Show Answer Correct Answer: A) Charges can't flow through a broken path. 21. If R1 and R2 are the filament resistances of 200 W and a 100 W bulb respectively both designed to run at the same voltage, then A) R1 is two times of R2. B) R2 is two times of R1. C) R1 is four times of R2. D) R2 is four times of R1. Show Answer Correct Answer: B) R2 is two times of R1. 22. What is the value of the resistance of the resistor in ohms with color code Brown Black Yellow (ignore the tolerance) A) 100 k. B) 10 k. C) 1 k. D) 1000 k. Show Answer Correct Answer: A) 100 k. 23. Can happen by accident and is difficult to control A) Static Electricity. B) Current Electricity. C) All the above. D) None of the above. Show Answer Correct Answer: A) Static Electricity. 24. What is the resistance of a conductor? A) The ratio of voltage to current. B) The ratio of current to voltage. C) The product of voltage and current. D) The sum of voltage and current. Show Answer Correct Answer: A) The ratio of voltage to current. 25. Device used to measure electric current is A) Voltmeter. B) Ammeter. C) Barometer. D) Odometer. Show Answer Correct Answer: B) Ammeter. ← 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