This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Physics Part I > Class 12 Physics (Part I) Chapter 3 Current Electricity – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 15 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What do fuel cells, batteries, and solar cells have in common? A) They all produce static electricity. B) They are all sources of direct current. C) They are all sources of alternating current. D) They can all be used to power automobiles. Show Answer Correct Answer: B) They are all sources of direct current. 2. What direction does a compass point? A) South. B) East. C) North. D) West. Show Answer Correct Answer: C) North. 3. Which of the following items would be needed to generate electricity? A) A magnet and metal bar. B) Metal bar and wire. C) A magnet and wire. D) A battery, a magnet, and a wire. Show Answer Correct Answer: C) A magnet and wire. 4. In a potentiometer experiment, the balancing length with a cell is 240 cm. On shunting the cell with a resistance of 2 ohm, the balancing length becomes 120 cm. The internal resistance of the cell is ..... ohm. A) 0.5. B) 1. C) 2. D) 4. Show Answer Correct Answer: C) 2. 5. What is the purpose of transmission wires? A) Move electricity from place to place. B) Increase or decrease the voltage of the electricity. C) Change mechanical energy into electrical energy. D) None of the above. Show Answer Correct Answer: A) Move electricity from place to place. 6. The movement of electrons is called electric ..... A) Transport. B) Voltage. C) Resistance. D) Current. Show Answer Correct Answer: D) Current. 7. 3 resistors are connected to a 9 V battery n a series circuit, the first resistor uses 6 V, the second uses 2 V. How much voltage does the third resistor use? A) 9 V. B) 1 V. C) 2 V. D) 3 V. Show Answer Correct Answer: B) 1 V. 8. A carbon resistance has colour bands in order yellow, brown, red. Its resistance is A) 41 $\Omega$. B) 41 x 10 $^{2}$ $\Omega$. C) 4 x 10 $^{3}$ $\Omega$. D) 4.2 $\Omega$. Show Answer Correct Answer: B) 41 x 10 $^{2}$ $\Omega$. 9. Which of the following best describes a lightning strike? A) A form of current electricity. B) A form of thermal energy. C) A form of mechanical energy. D) A form of static electricity. Show Answer Correct Answer: D) A form of static electricity. 10. The mechanical equivalent of heat is 1 cal = 4.18 J. A heating coil, connected to a 120-V source, provides 60, 000 calories in 10 minutes. The current in the coil is: A) 2 A. B) 20 A. C) 0.83 A. D) 3.5 A. Show Answer Correct Answer: D) 3.5 A. 11. Batteries convert what type of energy into electricity? A) Chemical energy. B) Mechanical energy. C) Both. D) Kinetic energy. Show Answer Correct Answer: A) Chemical energy. 12. Measurement of how much current is flowing in a circuit A) Terminal. B) Voltage. C) Amperes. D) Charge. Show Answer Correct Answer: C) Amperes. 13. Jacob tested a material in the science lab. He put it between a wire and a battery in a closed circuit. What evidence might have led him to decide the material is an insulator? A) The light bulb was off. B) She did not create a short circuit. C) The battery did not die. D) The wire got hot. Show Answer Correct Answer: A) The light bulb was off. 14. The internal resistance of a cell of emf 4 V is 0.1 ohm. It is connected to a resistance of 3.9 ohm. The terminal voltage across the cell will be ..... A) 2 V. B) 2.8 V. C) 0.1 V. D) 3.9 V. Show Answer Correct Answer: D) 3.9 V. 15. Across metallic conductor of non-uniform cross-section, a constant potential difference is applied. The quantity which remain(s) constant along the conductor is A) Current. B) Current density. C) Electric field. D) Drift velocity. Show Answer Correct Answer: A) Current. 16. What is the formula for total resistance in a parallel circuit? A) 1/R total = R1 + R2 + R3 + + Rn. B) 1/R total = 1/R1 + 1/R2 + 1/R3 + + 1/Rn. C) R total = R1 + R2 + R3 + + Rn. D) R total = R1 * R2 * R3 * * Rn. Show Answer Correct Answer: B) 1/R total = 1/R1 + 1/R2 + 1/R3 + + 1/Rn. 17. A parallel plate capacitor stores a charge Q at a voltage V. suppose the area of the parallel plate capacitor and the distance between the plates are each doubled then which is the quantity that will change? A) Capacitance. B) Energy density. C) Charge. D) None of the above. Show Answer Correct Answer: B) Energy density. 18. Appliances at home usually run on what voltage? A) 120 or 175. B) 250 or 500. C) 120 or 240. D) 175 or 250. Show Answer Correct Answer: C) 120 or 240. 19. Arrangement is used to increase the current in a circuit. A) Resistors connected in parallel. B) Resistors connected in series. C) Resistors connected in alternate. D) Resistors connected in combination. Show Answer Correct Answer: A) Resistors connected in parallel. 20. Turbulent flow is A) Unsteady and regular. B) Steady and regular. C) Unsteady and irregular. D) Steady and regular. Show Answer Correct Answer: C) Unsteady and irregular. 21. In a car battery, a current is produced by the flow of both negatively and positively charged particles A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. If 100 W bulb and 60 W bulb is connected in parallel ..... bulb/ bulbs glows brighter. A) 60 W. B) 100 W. C) Both 100 W and 60 W. D) Neither 100 W or 60 W. Show Answer Correct Answer: B) 100 W. 23. Which material is an insulator? A) Plastic. B) Metal. C) A spoon. D) None of the above. Show Answer Correct Answer: A) Plastic. 24. When a potential difference is applied across, the current passing through A) An insulator at 0 K is zero. B) A semiconductor at 0 K is zero. C) A p-n diode at 300 K is finite if it s reverse biased. D) All the options are correct. Show Answer Correct Answer: D) All the options are correct. 25. In parallel circuit, there are ..... pathways for charge to flow. A) One. B) Two or more. C) None. D) Zero. Show Answer Correct Answer: B) Two or more. 26. The storage battery of a car has an emf of 8 V, if the internal resistance of battery 0.8 ohm, what is the maximum current that can be drawn from the battery A) 10A. B) 40A. C) 30A. D) 20A. Show Answer Correct Answer: A) 10A. 27. How does a generator create current? A) By using a fan. B) By using energy from the sun. C) By using an electromagnet. D) By using an internal combustion engine. Show Answer Correct Answer: C) By using an electromagnet. 28. Mathematical expression for Ohm's law is ..... A) V = I R. B) R = V I. C) I = V R. D) None of the above. Show Answer Correct Answer: A) V = I R. 29. In a series circuit, the receivers do what with the electricity? A) Get rid of it. B) Share it. C) Lose it. D) None of the above. Show Answer Correct Answer: B) Share it. 30. What is the term for the work done per unit charge in a circuit? A) Voltage. B) Current. C) Resistance. D) Power. Show Answer Correct Answer: A) Voltage. 31. What is the effect of increasing resistance in a circuit on the current? A) Current remains the same. B) Current fluctuates. C) Current decreases. D) Current increases. Show Answer Correct Answer: C) Current decreases. 32. Which of these items radiate heat energy? A) Oven, hair dryer, toaster. B) Shower, toaster, vacuum. C) Sun, toaster, TV. D) None of the above. Show Answer Correct Answer: A) Oven, hair dryer, toaster. 33. A flow of electric charges is ..... A) A circuit. B) A conductor. C) An insulator. D) An electric current. Show Answer Correct Answer: D) An electric current. 34. True or False:The location on an electric circuit where the charge possesses the greatest amount of electric potential energy is the + terminal of the battery. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. A switch that protects circuits from dangerous high currents-the switch will push open to create and open circuit A) Filament. B) Circuit breaker. C) Amperes. D) Fuse. Show Answer Correct Answer: B) Circuit breaker. 36. Which of these colors is NOT used in the resistor's color code value? A) Black. B) Pink. C) Violet. D) White. Show Answer Correct Answer: B) Pink. 37. Which of the following is an example of a real-world application of current electricity? A) A magnet attracting iron filings. B) A solar panel converting sunlight into electricity. C) A light bulb lighting up when connected to a battery. D) A balloon sticking to a wall after being rubbed. Show Answer Correct Answer: C) A light bulb lighting up when connected to a battery. 38. What is the unit of electric current? A) Volt. B) Ampere. C) Ohm. D) Watt. Show Answer Correct Answer: B) Ampere. 39. What does a voltmeter measure? A) Current. B) Voltage. C) Resistance. D) None of the above. Show Answer Correct Answer: B) Voltage. 40. Wires X and Y are made from the same material. X has a resistance of $48\Omega$ A) 24 $\Omega$. B) 96 $\Omega$. C) 12 $\Omega$. D) 48 $\Omega$. Show Answer Correct Answer: C) 12 $\Omega$. 41. The conductivity of a semiconductor ..... rapidly with temperature A) Increases. B) Decreases. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increases. 42. You open a circuit when you turn a light off. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. In a parallel circuit which wires have the hightest amount of amps? A) The one farthers away from the battery. B) The closed wires to the battery. C) The ones next to the bulbs. D) None of the above. Show Answer Correct Answer: B) The closed wires to the battery. 44. A bulb marked 220 V, 40 W, calculate current flowing through the bulb and its resistance A) 1200 ohm, 0.18 A. B) 1200 ohm, 1.8 A. C) 1210 ohm, 0.18 A. D) 121 ohm, 0.18 A. Show Answer Correct Answer: C) 1210 ohm, 0.18 A. 45. Which of the following is NOT a situation caused by static electricity? A) Hair stands on end when touching a static electricity generator. B) You get a electric shock when touching a doorknob during dry winter. C) Your hair stands on end when you are frightened. D) Clothes in the dryer cling to one another when no fabric softener is used. Show Answer Correct Answer: C) Your hair stands on end when you are frightened. 46. In an experiment of wheatstone bridge, the position of galvanometer and cell is interchanged, then balanced point will be A) Will change. B) Remains unchanged. C) Depends upon internal resistance and resistance of galvanometer. D) None of these. Show Answer Correct Answer: B) Remains unchanged. 47. A material that reduces current flow in a circuit. A) Current. B) Voltage. C) Ampere. D) Resistor. Show Answer Correct Answer: D) Resistor. 48. What is the difference between current electricity and static electricity? A) Current electricity flows through a conductor, while static electricity is stationary. B) Current electricity is stationary, while static electricity flows through a conductor. C) Both are forms of electricity that flow through conductors. D) None of the above. Show Answer Correct Answer: A) Current electricity flows through a conductor, while static electricity is stationary. 49. What color that has a multiplier of x1000 A) Red. B) Brown. C) Blue. D) Orange. Show Answer Correct Answer: D) Orange. 50. A complete circuit has ..... A) A switch in it. B) No breaks in it. C) A motor in it. D) Two bulbs in it. Show Answer Correct Answer: B) No breaks in it. 51. The potential difference between the terminals of a 12.0 V battery is 13.2 V when it is being charged by a current of 2.0 A. What is the internal resistance of the battery? (Hint-Use Terminal Potential = EMF-Current*Internal Resistance) A) 2.4 $\Omega$. B) 3.6 $\Omega$. C) 1.2 $\Omega$. D) 0.6 $\Omega$. Show Answer Correct Answer: D) 0.6 $\Omega$. 52. The basic laws for analyzing an electric circuit are:- A) Einstein's theory. B) Kirchhoff's laws. C) Newtons laws. D) Faradays laws. Show Answer Correct Answer: B) Kirchhoff's laws. 53. What is the equivalent resistance of two 6$\Omega$ resistors in series? A) 18$\Omega$. B) 12$\Omega$. C) 3$\Omega$. D) 6$\Omega$. Show Answer Correct Answer: B) 12$\Omega$. 54. Larry uses a transformer to step down an incoming voltage. The transformer has ten loops in the primary coil and six in the secondary. If the incoming voltage is 120 volts, what is the outgoing voltage? A) 72. B) 240. C) 200. D) 720. Show Answer Correct Answer: A) 72. 55. A certain x-ray tube requires a current of 7 mA at a voltage of 80 kV. The rate of energydissipation (in watts) is: A) 560. B) 26. C) 5600. D) 87.5. Show Answer Correct Answer: A) 560. 56. All electrical devices contain electric circuits A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 57. In a parallel circuit, if one bulb burns out, what happens to the other bulbs? A) All bulbs go out. B) The other bulbs remain lit. C) The circuit breaks completely. D) The voltage increases. Show Answer Correct Answer: B) The other bulbs remain lit. 58. According to equation of continuity, A$_{1}$V$_{1}$ = A$_{2}$V$_{2}$ = constant. The constant is equal to: A) Mass of fluid. B) Volume of fluid. C) Density of fluid. D) Flow rate. Show Answer Correct Answer: D) Flow rate. 59. What is an electrical conductor? A) A material which allows electricity to pass through it. B) A material which allows light to pass through it. C) A material which does not allow electricity to pass through it. D) All of the above. Show Answer Correct Answer: A) A material which allows electricity to pass through it. 60. Why is current electricity a better source for use in our homes than static electricity? A) Materials must be used to create electricity. B) Electricity is used where people live. C) A steady flow of electric current is needed in our homes. D) Different amounts of electricity are used at different times. Show Answer Correct Answer: C) A steady flow of electric current is needed in our homes. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books