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 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The Superposition principle is obeyed by ..... A) Trilateral networks. B) Lateral networks. C) Linear networks. D) Non-linear networks. Show Answer Correct Answer: C) Linear networks. 2. A current of 10 A is passing through a lamp. What charge will pass through it in 20 seconds? A) 5 C. B) 20 C. C) 200 C. D) 50 C. Show Answer Correct Answer: C) 200 C. 3. A 12 volt battery supplies voltage to two bulbs. How much voltage would each bulb get? A) 6 volts. B) 12 volts. C) All the above. D) None of the above. Show Answer Correct Answer: A) 6 volts. 4. What kind of energy is the electricity transferred into in a toaster? A) Sound. B) Light. C) Heat. D) Light and heat. Show Answer Correct Answer: D) Light and heat. 5. Select the correct statement regarding current A) Its dimension is [M$^{0}$ L$^{0}$ T$^{0}$ A]. B) It is a scalar quantity. C) It's SI unit is ampere. D) All of these. Show Answer Correct Answer: D) All of these. 6. Which of the following is NOT a good conductor? A) Aluminum. B) Copper. C) Silver. D) Mica. Show Answer Correct Answer: D) Mica. 7. If you cut a magnet in half, what happens to the poles? A) One half gets the North Pole, the other half gets the South Pole. B) Both halves get only a North Pole. C) Both halves get only a South Pole. D) Both halves get a North pole and a South Pole. Show Answer Correct Answer: D) Both halves get a North pole and a South Pole. 8. A contaminant to the environment, especially human-made waste. A) RECYCLE. B) POLLUTION. C) REDUCE. D) CONSUMER. Show Answer Correct Answer: B) POLLUTION. 9. In a series circuit, if one light bulb is removed, the rest of the light bulbs would ..... A) Short circuit. B) Burn out. C) Stay lit. D) Not work. Show Answer Correct Answer: D) Not work. 10. The value of equivalent resistance in series connection will be ..... than each individual resistance. A) Lesser. B) Equal. C) Zero. D) Greater. Show Answer Correct Answer: D) Greater. 11. The order of thermal speed of free electrons in the conductor, at room temperature is A) 10$^{-3}$ m/s. B) 10$^{5}$ m/s. C) 10$^{-5}$ m/s. D) 10$^{3}$ m/s. Show Answer Correct Answer: B) 10$^{5}$ m/s. 12. The amount of electricity produced by a generator can be increased by A) Adding more loops of wire. B) Increasing current. C) Putting an iron core inside the coil. D) All of the above. Show Answer Correct Answer: A) Adding more loops of wire. 13. What is the time taken when 1500 C of charge flows through a fixed point to give a current of 10 A? A) 3.0 min. B) 2.0 min. C) 1.5 min. D) 2.5 min. Show Answer Correct Answer: D) 2.5 min. 14. The 2 types Electricity are A) Static. B) Current. C) Static and Current. D) Non of the above. Show Answer Correct Answer: C) Static and Current. 15. A material that allows the free flow of electric charges. A) Conductor. B) Insulator. C) Semiconductor. D) None of the above. Show Answer Correct Answer: A) Conductor. 16. A current of 2A passing through the conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is A) 20 ohm. B) 4 ohm. C) 0.5 ohm. D) 2 ohm. Show Answer Correct Answer: D) 2 ohm. 17. An electric bulb is connected to a 240 V generator, The current drawn is 0.25 A. Then the power of the bulb is A) 60 W. B) 24 W. C) 600 W. D) 0.6 W. Show Answer Correct Answer: A) 60 W. 18. Three resistors of 2 ohm, 3 ohm and 5 ohm are connected in series with a 10 V battery. What is the power dissipated by the 5 ohm resistor in 10 seconds? A) 50 W. B) 200 W. C) 20 W. D) 5 W. Show Answer Correct Answer: D) 5 W. 19. Which of the following would increase the electrical resistance in a wirte? A) Shorten the length of the wire. B) Increase the diameter of the wire. C) Increase the temperature of the wire. D) Use a less dense material for the wire. Show Answer Correct Answer: C) Increase the temperature of the wire. 20. Which material is a good conductor of electricity? A) Wood. B) Copper. C) Rubber. D) Glass. Show Answer Correct Answer: B) Copper. 21. This circuit has more than one loop. When one light goes out, the others stay on. A) Closed circuit. B) Series circuit. C) Parallel circuit. D) Open circuit. Show Answer Correct Answer: C) Parallel circuit. 22. What 1 kW is equivalent to ..... watts? A) 1, 000 W. B) 100 W. C) 10, 000 W. D) 10 W. Show Answer Correct Answer: A) 1, 000 W. 23. A current of 5 Amp is allowed to flow through a wire of cross sectional area 5 mm$^{2}$. What will be the current density if the area vector describes an angle of 90$^{0}$ to the electric current A) 0. B) 5 x 10$^{-5 }$Am$^{-2}$. C) 2 x 10$^{-5 }$Am$^{-2}$. D) 2 x 10$^{-6 }$Am$^{-2}$. Show Answer Correct Answer: A) 0. 24. Eel has ..... pair of organs to produce electricity. A) One. B) Two. C) Three. D) None of the above. Show Answer Correct Answer: C) Three. 25. Electricity is ..... A) The presence and flow of electrons in two directions. B) The presence and flow of electrons in one direction. C) All the above. D) None of the above. Show Answer Correct Answer: B) The presence and flow of electrons in one direction. 26. If a 15 $\Omega$ resistor is connected to 30 V, what is the current through the resistor? (I=V/R) ***You will need to show the work for this problem on paper*** A) 4 A. B) 2 A. C) 8 A. D) 6 A. Show Answer Correct Answer: B) 2 A. 27. What is the voltage of a 60 ohm, 2 amp device? A) 120 volts. B) 30 volts. C) 10.95 volts. D) 0.033 volts. Show Answer Correct Answer: A) 120 volts. 28. Interactions between electric charges A) Solar cells. B) Energy. C) Motor. D) Electricity. Show Answer Correct Answer: D) Electricity. 29. Which one is vector quantity? A) Current density. B) Electric charge. C) Electric current. D) Electric potential. Show Answer Correct Answer: A) Current density. 30. The value of resistance for the colour code of the give resistor is ..... green, blue, orange and gold A) 56 kohm +or-5%. B) 46ohm. C) 56 ohm. D) 56 kohm+or-10%. Show Answer Correct Answer: A) 56 kohm +or-5%. 31. How does a transformer help electricity get to your home? A) Transformers carry the electricity to your home. B) Transformers lower the power of the electricity so it can enter your home. C) Transformers create the electricity for your home. D) They fight Optimus Prime. Show Answer Correct Answer: B) Transformers lower the power of the electricity so it can enter your home. 32. Non-metals are good insulators. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 33. In order to build an electromagnet you would need ..... A) A battery and a wire. B) A battery, a light bulb, and a wire. C) A battery, a wire, and an iron core. D) A battery, a wire, and a compass. Show Answer Correct Answer: C) A battery, a wire, and an iron core. 34. A 15 volt battery supplies voltage to 3 bulbs. How much voltage would each bulb get? A) 15 volts. B) 5 volts. C) All the above. D) None of the above. Show Answer Correct Answer: B) 5 volts. 35. The maximum power is delivered from a source to its load when the load resistance is greater than the source resistance. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 36. The magnitude of electric field intensity E is such that, an electron placed in it would experience an electrical force equal to its A) E/mg. B) Mg/e. C) Mge. D) E$^{2}$g/m$^{2}$. Show Answer Correct Answer: B) Mg/e. 37. A rigid body is rotating about an axis. to stop the rotation, we have to apply ..... A) Torque. B) Momentum. C) Pressure. D) Force. Show Answer Correct Answer: A) Torque. 38. In case of four wires of same material, the resistance will be minimum when its length and diameter are respectively: A) L and D. B) 2L and D. C) (L/2) and 2D. D) 2L and (D/2). Show Answer Correct Answer: C) (L/2) and 2D. 39. Plastic is a good electrical conductor. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 40. A cylindrical copper rod has resistance R. It is reformed to twice its original length with no change of volume. Its new resistance is: A) 8R. B) 2R. C) 4R. D) R. Show Answer Correct Answer: C) 4R. 41. What is the primary function of a battery in a circuit? A) To resist the flow of current. B) To provide a path for the current. C) To store electrical energy. D) To convert electrical energy into light. Show Answer Correct Answer: C) To store electrical energy. 42. If resistance is increased, current will ..... A) Increase. B) Decrease. C) Stay the same. D) None of the above. Show Answer Correct Answer: B) Decrease. 43. Which material is commonly used as an insulator in electrical circuits? A) Rubber. B) Aluminum. C) Copper. D) Iron. Show Answer Correct Answer: A) Rubber. 44. According to Ohm's Law, if you were to triple the voltage of a circuit without changing the resistance, what would happen to the flow of current? A) It would decrease by 3x. B) It would stay the same. C) It would increase by 2x. D) It would increase by 3x. Show Answer Correct Answer: D) It would increase by 3x. 45. Does this statement best describe a parallel or a series circuit. When more light bulbs are added they all remain bright. A) Parallel circuit. B) Series circuit. C) All the above. D) None of the above. Show Answer Correct Answer: A) Parallel circuit. 46. If the distance doubles, what happens to the force? A) Reduced by half. B) Reduced by 1/4. C) Quadruples. D) Stays the same. Show Answer Correct Answer: B) Reduced by 1/4. 47. Wood is a ..... ? A) Conductor. B) Insulator. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insulator. 48. A Carbon Resistor is marked in colour bands of Red, Black, Orange, Silver.What is the resistance and tolerance value of the resistor? A) 20 kilo ohm. B) 25 kilo ohm & +-10%. C) 20 kilo ohm & +-10%. D) 18 kilo ohm & +-5%. Show Answer Correct Answer: C) 20 kilo ohm & +-10%. 49. ..... is used to measure the magnitude of current flowing in a circuit. A) Ammeter. B) Load. C) Galvanometer. D) Voltmeter. Show Answer Correct Answer: C) Galvanometer. 50. How are a copper wire and aluminum foil alike? A) Negative charges move through them easily,. B) They are both silver colored metals. C) They are both used to insulate wires. D) Negative charges can't move through them. Show Answer Correct Answer: A) Negative charges move through them easily,. 51. Atoms have a nucleus made of protons and electrons. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 52. By what percent the specific resistance of a conductor change when it is length is increased by two times. A) 20%. B) 10%. C) No change. D) 5%. Show Answer Correct Answer: C) No change. 53. What happends to current if voltage increased? A) Stops working. B) Current increases. C) Current descreases. D) None of the above. Show Answer Correct Answer: B) Current increases. 54. Objects affected by this form of electricity do not have to be touching A) Static Electricity. B) Current Electricity. C) All the above. D) None of the above. Show Answer Correct Answer: A) Static Electricity. 55. Which one uses less wire? A) Parallel circuit. B) Series Circuit. C) All the above. D) None of the above. Show Answer Correct Answer: B) Series Circuit. 56. Which of these is not another name for voltage? A) Electromotive force. B) Potential difference. C) Flow of charge. D) None of the above. Show Answer Correct Answer: C) Flow of charge. 57. Current that does NOT reverse direction is called ..... A) Direct current. B) Circuit current. C) Alternating current. D) Magnetic current. Show Answer Correct Answer: A) Direct current. 58. Your fuse at home has "blown" up many times. Which of the following will you do to solve this problem and prevent it from happening again? A) Connect appliances in series instead of parallel. B) Do not use too many appliances at the same time. C) Plug two or three appliances in one outlet. D) Connect an additional fuse to your circuit. Show Answer Correct Answer: B) Do not use too many appliances at the same time. 59. What type of materials are needed to create an electromagnet? A) Switch, source of electricity, compass. B) Battery, coil of wire, iron core. C) Generator, iron core, switch. D) Battery, light bulb, plastic straw. Show Answer Correct Answer: B) Battery, coil of wire, iron core. 60. A Charging system producing 14.5 Volts with a current flow of 43.5 Amps, what is the circuit resistance A) 58 Amps. B) 1 Amp. C) 13 Amps. D) 0.33 Amps. Show Answer Correct Answer: D) 0.33 Amps. ← 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