This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 48 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor A) 12 volts. B) 24 volts. C) 1.3333. D) 48 volts. Show Answer Correct Answer: D) 48 volts. 2. A metallic wire of resistance 12 ohm is bent to form a square. The resistance between the two diagonal points would be A) 12 ohm. B) 24 ohm. C) 6 ohm. D) 3 ohm. Show Answer Correct Answer: D) 3 ohm. 3. Identify the easiest way to reduce static build up on an object A) Add a ground wire to discharge any charge. B) Keep the object touching an insulator. C) Take out all the conducting material. D) Rub the object with an insulator. Show Answer Correct Answer: A) Add a ground wire to discharge any charge. 4. Current is measured in what unit? A) Ohms. B) Volts. C) Watts. D) Amps. Show Answer Correct Answer: D) Amps. 5. 1 ampere of current is defined as ..... A) One coulomb of current passing through the surface area in one second. B) One coulomb of charge passing through the conductor in one second. C) One coulomb of charge passing through the surface area in one second. D) One coulomb of currrent passing through the conductor in one second. Show Answer Correct Answer: C) One coulomb of charge passing through the surface area in one second. 6. In a series cricuit, what are the amps of the wires if the battery has 1 amps? A) The wires have none. B) Each wire has 1/2. C) Each of the wires will get 1/4. D) All the wires have 1 amps each. Show Answer Correct Answer: D) All the wires have 1 amps each. 7. The Potential difference between the two electrodes of the lead-acid cell is nearly ..... A) 1 V. B) 1.2 V. C) 1.5 V. D) 2 V. Show Answer Correct Answer: D) 2 V. 8. I am the path along which electricity travels. A) Electric circuit. B) Conductor. C) Insulator. D) Fuse. Show Answer Correct Answer: A) Electric circuit. 9. Two identical batteries, each with an emf of 18 V and an internal resistance of 1 $\Omega$, are wired in parallel by connecting their positive terminals together and connecting their negative terminals together. The combination is then wired across a 4-$\Omega$ resistor. The current in each battery is: A) 1.0 A. B) 2.0 A. C) 4.0 A. D) 3.6 A. Show Answer Correct Answer: B) 2.0 A. 10. Copper is a good conductor of electricity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Surrounding every magnet is a(n) ..... ..... A) Magnetic field. B) Electrical current. C) Smaller magnet. D) Funny saying. Show Answer Correct Answer: A) Magnetic field. 12. Which of the following is an example of a source of human-harnessed (current) electricity? A) Lightning striking a building. B) Getting a shock from a doorknob. C) A hydroelectric dam. D) Socks from the dryer sticking together. Show Answer Correct Answer: C) A hydroelectric dam. 13. Which instrument is used for measuring electric potential? A) Ammeter. B) Galvanometer. C) Voltmeter. D) Potentiometer. Show Answer Correct Answer: C) Voltmeter. 14. Electricity can flow through graphite. Graphite is therefore a(n) A) Conductor. B) Insulator. C) Electron. D) Conductor and insulator. Show Answer Correct Answer: A) Conductor. 15. An electric iron draws a current 4 A when connected to a 220 V mains. Its resistance must be A) 1000 $\Omega$. B) 55 $\Omega$. C) 44 $\Omega$. D) None of these. Show Answer Correct Answer: B) 55 $\Omega$. 16. If q=(8t$^{2}$+2t+1 )$\mu$C Find Instantaneous Current at t= 2 sec and average Current at 0 to 2 sec A) 3$\mu$A, 18$\mu$A. B) 4$\mu$A, 8$\mu$A. C) 34$\mu$A, 18$\mu$A. D) 4$\mu$A, 1$\mu$A. Show Answer Correct Answer: C) 34$\mu$A, 18$\mu$A. 17. Every battery has 4 electrodes A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. What is the potential difference across resistors in parallel? A) Same across all. B) Depends on current. C) Different for each. D) Zero. Show Answer Correct Answer: A) Same across all. 19. A(n) is coil of wire with a current running through it. If you wrap the coil around a ferromagnetic material, it becomes a(n) . A) Solenoid, electromagnet. B) Electromagnet, solenoid. C) Motor, generator. D) Generator, motor. Show Answer Correct Answer: A) Solenoid, electromagnet. 20. ..... are good conductors of electricity. A) Insulators. B) Metals. C) Non metals. D) None of the above. Show Answer Correct Answer: B) Metals. 21. Ohm is Equivalent to? A) Ampere/volt. B) Volt/ampere. C) Coulomb/volt. D) Volt/coulomb. Show Answer Correct Answer: B) Volt/ampere. 22. In a simple voltaic cell ..... and ..... metal are used as electrodes. A) Cupper and silver. B) Copper and zinc. C) Zinc and sulphuric acid. D) Copper and sulphuric acid. Show Answer Correct Answer: B) Copper and zinc. 23. The thin wire inside alight bulb is called the filament. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. A wire of resistance R is stretched to n times of its original length. The resistance of stretched wire would be- A) NR. B) N$^{2}$R. C) R/n. D) R/n$^{2}$. Show Answer Correct Answer: B) N$^{2}$R. 25. How are electromagnets different from regular magnets? A) Their strength can be changed. B) They can be turned on and off. C) Their polarity can be reversed. D) All choices are correct. Show Answer Correct Answer: D) All choices are correct. ← 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