This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 40 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 40 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Electrical charge built up on the surface of an object is called ..... A) Static electricity. B) Current electricity. C) Lightning. D) Electrons. Show Answer Correct Answer: A) Static electricity. 2. What happens to the brightness of the light bulbs in a series circuit when you add more lights. A) Each bulb gets dimmer. B) Each bulb remains the same. C) Half of the bulbs get dimmer. D) Each bulb gets brighter. Show Answer Correct Answer: A) Each bulb gets dimmer. 3. A voltmeter coil has resistance 100 $\Omega$ and a resistor of 1.1 k$\Omega$ is connected in series. It can read potential differences up to 24 volts. If this same coil is used to construct an ammeter which can measure currents up to 1.0 A, what should be the approximate resistance of the shunt used? (Note-1.1 k $\Omega$ resistance not to be used in the construction of the Ammeter) A) 2 $\Omega$. B) 1 $\Omega$. C) 4 $\Omega$. D) 0.5 $\Omega$. Show Answer Correct Answer: A) 2 $\Omega$. 4. N capacitors each of capacitance C are connected in series the effective capacitance is A) N/C. B) C/n. C) NC. D) None of the above. Show Answer Correct Answer: B) C/n. 5. Very small current flows when lightning occurs A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. What happens when two items of positive charges comes together? A) They explode. B) They repel. C) They fall. D) They attract. Show Answer Correct Answer: B) They repel. 7. Two 110-V light bulbs, one "25 W" and the other "100 W" , are connected in series to a 110 V source. Then: A) The current in the 100-W bulb is greater than that in the 25-W bulb. B) The current in the 100-W bulb is less than that in the 25-W bulb. C) Both bulbs will light with equal brightness. D) None of the above. Show Answer Correct Answer: D) None of the above. 8. Electric current has both magnitude and direction. It is a A) Vector quantity. B) Scalar quantity. C) Tensor quantity. D) None of these. Show Answer Correct Answer: B) Scalar quantity. 9. One type of energy can be converted into another. Electrical energy is converted into mechanical energy when a fan is plugged into a power source and turned on. If the fan and power source are not connected to anything else, the amount of electrical energy is the same as the amount of mechanical energy. What is this rule known as? A) Transference of energy. B) Conversion of energy. C) Adaptation of energy. D) Conservation of energy. Show Answer Correct Answer: D) Conservation of energy. 10. Repel means A) To pull toward each other. B) To push away from each other. C) Neither positive nor negative. D) Either a negative (-) or positive (+) charge. Show Answer Correct Answer: B) To push away from each other. 11. Electric current passes through a circuit produces A) Chemical effect. B) Magnetic effect. C) Thermoelectric effect. D) All the above. Show Answer Correct Answer: D) All the above. 12. Surface tension is due to A) Frictional force between molecules. B) Cohesive force between molecules. C) Adhesive force between molecules. D) Gravitational force. Show Answer Correct Answer: B) Cohesive force between molecules. 13. Current Electricity and Magnetism A) A device that stores electrical energy in an electric field. B) A device that converts electrical energy into mechanical energy. C) A device that measures the current in a circuit. D) A device that converts mechanical energy into electrical energy. Show Answer Correct Answer: B) A device that converts electrical energy into mechanical energy. 14. We use alloy for making of resistors, because they have A) Temp. coefficient Resistivity(a) Low low. B) High High. C) High LOW. D) Low High. Show Answer Correct Answer: A) Temp. coefficient Resistivity(a) Low low. 15. Provides power to a circuit A) Source. B) Light bulb. C) Wire. D) Bulb holder. Show Answer Correct Answer: A) Source. 16. A wire of 9 ohm resistance is broken in two parts. The length ratio being 1:2. The two pieces are connected in parallel. The net resistance will be A) 2 ohm. B) 3 ohm. C) 4 ohm. D) 6 ohm. Show Answer Correct Answer: A) 2 ohm. 17. If two objects with static charge are attracted, what do you know about them? A) They are both positively charged. B) They are both negatively charged. C) One is positively charged and one is negatively charged, but you won't be able to tell which is which. D) One is positively charged and one is negatively charged, and you can tell which is which by looking at them. Show Answer Correct Answer: C) One is positively charged and one is negatively charged, but you won't be able to tell which is which. 18. The movement of electrons along a path A) Circuit. B) Current. C) Charge. D) Switch. Show Answer Correct Answer: B) Current. 19. The ..... has lowest resistivity. A) Conductor. B) Insulator. C) Semiconductor. D) All the obove. Show Answer Correct Answer: A) Conductor. 20. Which of the following represents the largest form of how electrical energy was generated in Ontario in 2007? A) Coal. B) Hydro. C) Nuclear. D) Natural Gas. Show Answer Correct Answer: C) Nuclear. 21. What is the continuous movement of electrons called? A) Static electricity. B) Current electricity. C) Friction. D) Power. Show Answer Correct Answer: B) Current electricity. 22. A certain wire has a resistance R . The resistance of another wire identical with the first except having twice its diameter is A) 2 R. B) 0.25 R. C) 4 R. D) 0.5 R. Show Answer Correct Answer: B) 0.25 R. 23. A flaw in the circuit that allows a large current to flow through where it isn't wanted. A) Full circuit. B) Short circuit. C) Sideways circuit. D) Tall circuit. Show Answer Correct Answer: B) Short circuit. 24. The tungsten filament of two electric bulbs are of the same length. If one of them gives 25 W power and the other 60 W power, then A) Both the filaments are of same thickness. B) 25 W bulb has thicker filament. C) 60 W bulb has thicker filament. D) Both the filaments have same area of cross-section. Show Answer Correct Answer: C) 60 W bulb has thicker filament. 25. If a 2 $\Omega$ resistor is connected to 12 V, what is the current through the resistor? (I=V/R) ***You will need to show the work for this problem on paper*** A) 3 A. B) 4 A. C) 5 A. D) 6 A. Show Answer Correct Answer: D) 6 A. ← 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