This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A 2.0-ohm resistor and a 4.0-ohm resistor are connected in series with a 12-volt battery. If the current through the 2.0-ohm resistor is 2.0 amperes, the current through the 4.0-ohm resistor is A) 1.0 A. B) 2.0 A. C) 3.0 A. D) 4.0 A. Show Answer Correct Answer: B) 2.0 A. 2. A wire of 10 ohm resistance is stretched to thrice its original length . Calculate the new resistivity A) 3 times. B) 9 times. C) No change. D) 10. Show Answer Correct Answer: C) No change. 3. A room heater is marked as 1000watt-200V, find the percentage change in the power of heater if voltage drops 120V A) 36%. B) 54%. C) 64%. D) 72%. Show Answer Correct Answer: C) 64%. 4. When capacitors is arrange in series (3 capacitors), the equivalent capacitance C is A) C = C$_{1}$ + C$_{2}$ + C$_{3}$. B) 1/C = 1/C$_{1}$ + 1/C$_{2}$ + 1/C$_{3}$. C) C = QV$_{1}$ + QV$_{2}$ + QV$_{3}$. D) C = CR$_{1}$ + CR$_{2}$ + CR$_{3}$. Show Answer Correct Answer: B) 1/C = 1/C$_{1}$ + 1/C$_{2}$ + 1/C$_{3}$. 5. A complete, connected circuit: A) Closed Circuit. B) Open Circuit. C) Conductor Circuit. D) None of the above. Show Answer Correct Answer: A) Closed Circuit. 6. What is current electricity? A) Current electricity involves a continuous flow of neutrons. B) Current electricity involves a continuous flow of protons. C) Current electricity is a single transfer of electrons. D) Current electricity is a steady flow of electrons. Show Answer Correct Answer: D) Current electricity is a steady flow of electrons. 7. Mrs. Rodriguez has a battery, wooden spoon, copper wire, metal paperclip, and a light bulb. Which materials does Mrs. Rodriguez need in order to create a complete circuit? A) Battery, wooden spoon, copper wire, and light bulb. B) Battery, metal paperclip, copper wire, and light bulb. C) Metal paperclip, copper wire, and light bulb. D) Battery, wooden spoon, and light bulb. Show Answer Correct Answer: B) Battery, metal paperclip, copper wire, and light bulb. 8. What device is used to measure electric current in a circuit? A) Voltmeter. B) Ammeter. C) Ohmmeter. D) Thermometer. Show Answer Correct Answer: B) Ammeter. 9. The melting point of tungsten is A) 3280 $^{o }$C. B) 3580 $^{o }$C. C) 3380 $^{o }$C. D) 3680 $^{o }$C. Show Answer Correct Answer: C) 3380 $^{o }$C. 10. A voltmeter measures the voltage across a component. Where should it be positioned in a circuit in order to measure voltage correctly? A) In series with the component. B) In parallel with the component. C) Over the cell. D) Anywhere in the circuit. Show Answer Correct Answer: B) In parallel with the component. 11. What kind of circuits power the electrical devices in homes and buildings? A) Series circuits. B) Simple circuits. C) Parallel circuits. D) GFCI circuits. Show Answer Correct Answer: C) Parallel circuits. 12. Aclosedpath in which currentflows isknown as an Electric circuit. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 13. The physical quantity responsible for the current flow is A) Electric potential. B) Electricity. C) Electric potential difference. D) Resistance. Show Answer Correct Answer: C) Electric potential difference. 14. An electric iron of resistance 20 ohm takes a current of 5 A. Calculate the heat developed in 30 s. [Use H = I$^{2}$ X R X t] A) 1000 joules. B) 2000 joules. C) 15000 joules. D) 30000 joules. Show Answer Correct Answer: C) 15000 joules. 15. Give an example of conductor A) Glass. B) Copper wire. C) Mercury. D) Pure water. Show Answer Correct Answer: B) Copper wire. 16. Moving a permanent magnet through a coil of wire will A) Demagnetize the magnet. B) The wire will become an electromagnet. C) The magnet will become electrified. D) A current will be generated in the wire. Show Answer Correct Answer: D) A current will be generated in the wire. 17. What potential difference is required across an 8.0-$\Omega$ resistor to cause 2.0 A to flow through it? A) 4.0 V. B) 16 V. C) 8.0 V. D) 32 V. Show Answer Correct Answer: B) 16 V. 18. What is Direct Current (DC)? A) Current in which electric charges move in one direction. B) Current in which electric charges move in multiple directions. C) Current that does not involve electric charges. D) None of the above. Show Answer Correct Answer: A) Current in which electric charges move in one direction. 19. What happens to the electrons when you rub a balloon on your hair and it sticks to a wall? A) Electrons are transferred from the wall to the balloon. B) Electrons are transferred from the balloon to the wall. C) Electrons are transferred from your hair to the balloon. D) Electrons are transferred from the balloon to your hair. Show Answer Correct Answer: C) Electrons are transferred from your hair to the balloon. 20. Electricity flows freely it is considered a ..... no breaks A) Closed circuit. B) Short circuit. C) Fuse. D) Open circuit. Show Answer Correct Answer: A) Closed circuit. 21. What does AC stand for? A) Power plants. B) Direct current. C) Alternating current. D) None of the above. Show Answer Correct Answer: C) Alternating current. 22. What is the resistance for a Red, Green, Blue color resistor? A) 250, 000 ohms. B) 25K ohms. C) 25, 000, 000 ohms. D) 250K ohms. Show Answer Correct Answer: C) 25, 000, 000 ohms. 23. What is the amount of electricity that can be fatal. A) 0.001A. B) 0.1A. C) 10V. D) 100V. Show Answer Correct Answer: B) 0.1A. 24. Physics is the study of matter and energy A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. Kirchhoff's II law for the electric network is based on: A) Law of conservation of charge. B) Law of conservation of energy. C) Law of conservation of angular momentum. D) Law of conservation of mass. Show Answer Correct Answer: B) Law of conservation of energy. ← 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 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books