This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 53 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 53 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When a metal conductor connected to left gap of a meter bridge is heated, the balancing point A) Shifts towards right. B) Shifts towards left. C) Remains unchanged. D) Remains at zero. Show Answer Correct Answer: A) Shifts towards right. 2. The ..... is the energy that flows from the battery, through the wire in it's path through the circuit. A) Electric Current. B) Conductor. C) Electromagnet. D) Insulator. Show Answer Correct Answer: A) Electric Current. 3. What is the SI unit for Electric Current? A) A. B) A. C) V. D) V. Show Answer Correct Answer: A) A. 4. Rubber is a good insulator. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. What is the power dissipated by a 32 ohm resistor with a current of 1.4A flowing through it? A) 35.2 W. B) 57.8 W. C) 22.4 W. D) 48.6 W. Show Answer Correct Answer: C) 22.4 W. 6. What needs to happen for static electricity to occur? A) A build-up of electrons on a surface. B) A constant flow of water. C) A reduction in air pressure. D) None of the above. Show Answer Correct Answer: A) A build-up of electrons on a surface. 7. Which is NOT true of a series circuit A) One light bulb can be broken and other lights will still work. B) All loads are a single loop. C) Adding more loads will lessen the current in the loop. D) None of the above. Show Answer Correct Answer: A) One light bulb can be broken and other lights will still work. 8. What is the term for the work done in bringing a unit positive charge from infinity to a point? A) Voltage. B) Resistance. C) Potential. D) Current. Show Answer Correct Answer: C) Potential. 9. True or False, Lighting is a form of static electricity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. If an electric current is passed through a nerve, the man A) Laughs. B) Weeps. C) Is excited. D) Becomes insensitive to pain. Show Answer Correct Answer: C) Is excited. 11. Atoms are made up of all of the following except A) Magnets. B) Protons. C) Neutrons. D) Electrons. Show Answer Correct Answer: A) Magnets. 12. True or False:Conductors allow electrons to pass through easily. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. What would happen to the current in a circuit if the voltage decreased? (V=IR) A) Increase. B) Decrease. C) Remain the same. D) None of the above. Show Answer Correct Answer: B) Decrease. 14. An ammeter is to be constructed which can read currents up to 2A. If the coil has a resistance of 50 $\Omega$ and takes 100 mA for full-scale deflection, what should be the resistance of the shunt used? A) 2.5 $\Omega$. B) 25 $\Omega$. C) 0.25 $\Omega$. D) 5 $\Omega$. Show Answer Correct Answer: A) 2.5 $\Omega$. 15. An electrical junction has three wires A, B and C connected to it. Wire A carries 4.2 A going in, wire B carries 2.6 A going out. What does wire C carry? A) 1.6 A going in. B) 1.6 A going out. C) 6.8 A going in. D) 6.8 A going out. Show Answer Correct Answer: B) 1.6 A going out. 16. Drift velocity v$_{d}$ varies with the intensity of the electric field as per the relation A) Vd $\propto$. B) Vd $\propto$ $\frac{1}{E}$. C) V$_{d}$=constant. D) Vd $\propto$ $E^2$. Show Answer Correct Answer: A) Vd $\propto$. 17. Which of the following materials is considered a good conductor of electricity? A) Rubber. B) Glass. C) Copper. D) Wood. Show Answer Correct Answer: C) Copper. 18. A high resistance light bulb and a low resistance light bulb are connected in series to a 6-Volt pack of batteries. Which of the two light bulbs will shine the brightest? A) They will have the same brightness. B) The low-R bulb will shine more brightly. C) The high-R bulb will shine more brightly. D) None of the above. Show Answer Correct Answer: C) The high-R bulb will shine more brightly. 19. A complete, unbroken path through which charges can easily flow. A) Circuit. B) Current. C) Voltage. D) Ohm. Show Answer Correct Answer: A) Circuit. 20. When magnetic field lines are drawn, how do they look? A) Straight lines. B) Criss-crossed lines like X's. C) Curved lines from N to S pole and outwards. D) Lines extending outward in all directions like drawing the Sun. Show Answer Correct Answer: C) Curved lines from N to S pole and outwards. 21. What is the magnitude of the electrostatic force that a charge of +3.0 X 10$^{-5}$ coulomb exerts on a charge of +6.0 X 10$^{-6}$ coulomb that is 0.30 meter away? A) 1.8 X 10$^{-3}$ N. B) 5.4 X 10$^{-2}$ N. C) 5.4 X 10$^{0}$ N. D) 1.8 X 10$^{1}$ N. Show Answer Correct Answer: D) 1.8 X 10$^{1}$ N. 22. Three resistors:R1 = 5 $\Omega$, R2 = 3 $\Omega$, and R3 = 4 $\Omega$ are connected in series to each other. A voltmeter connected in parallel to resistor R2 measures voltage of 6 V. What is the net voltage in the circuit? A) 24 V. B) 20 V. C) 16 V. D) 12 V. Show Answer Correct Answer: A) 24 V. 23. More resistance means more current. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. You can increase the strength of an electromagnet are increasing the current, adding iron to the core, and ..... A) Increasing the number of coils on the magnet. B) Decreasing the number of coils on the magnet. C) Dividing the number of coil. D) None of the above. Show Answer Correct Answer: A) Increasing the number of coils on the magnet. 25. A cell supplies a current of 0.9 A through a 2 ohm resistor and a current of 0.3 A through 7 ohm resistor. The internal resistance of the cell is A) 2.0 ohm. B) 1.5 ohm. C) 1 ohm. D) 0.5 ohm. Show Answer Correct Answer: D) 0.5 ohm. ← 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