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 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 3 Current Electricity Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Is it possible to CREATE electrons? A) Sometimes, it depends on the voltage. B) Sometimes, it depends on the element. C) Yes, that's what static electricity is. D) No, you can move them, but they are never created or distroyed. Show Answer Correct Answer: D) No, you can move them, but they are never created or distroyed. 2. What is an example of static electricity? A) A flowing river. B) Lightning. C) A burning candle. D) None of the above. Show Answer Correct Answer: B) Lightning. 3. A 10-ohm resistor has a constant current. If 1200 C of charge flow through it in 4 minutes what is the value of the current? A) 3.0 A. B) 20 A. C) 15 A. D) 5.0 A. Show Answer Correct Answer: C) 15 A. 4. How does increasing the voltage affect the current in a circuit with constant resistance? A) Increasing the voltage causes the resistance to decrease, affecting the current. B) Increasing the voltage has no effect on the current in a circuit with constant resistance. C) Increasing the voltage increases the current in a circuit with constant resistance. D) Increasing the voltage decreases the current in a circuit with constant resistance. Show Answer Correct Answer: C) Increasing the voltage increases the current in a circuit with constant resistance. 5. All circuits need to have a source of power and a load. What is a good example of a load? A) Toaster. B) Copper wire. C) Switch. D) Battery. Show Answer Correct Answer: A) Toaster. 6. What is the effect of the nature of the conductor on its resistance? A) Depends on temperature. B) Depends on material. C) No effect. D) Inversely proportional. Show Answer Correct Answer: B) Depends on material. 7. The reason why some objects become charged is that they gain or lose A) Atoms. B) Protons. C) Electrons. D) Neutrons. Show Answer Correct Answer: C) Electrons. 8. An electric ..... is a path electric current travels on. A) Insulator. B) Charge. C) Switch. D) Circuit. Show Answer Correct Answer: D) Circuit. 9. Resistor 1 has twice the resistance of resistor 2. They are connected in parallel to a battery.The ratio of the thermal energy generation rate in 1 to that in 2 is: A) 1:2. B) 1:1. C) 1:4. D) 2:1. Show Answer Correct Answer: A) 1:2. 10. The path through which a current flows A) Current. B) Circuit. C) Conductor. D) Charge. Show Answer Correct Answer: B) Circuit. 11. A series circuit has ..... path(s) that the electric current can take. A) Four. B) Three. C) Two. D) One. Show Answer Correct Answer: D) One. 12. Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential difference of the battery will be ..... V A) 3.5. B) 6.5. C) 4.5. D) 4.00. Show Answer Correct Answer: C) 4.5. 13. The electrons in an insulator are bound loosely to their atoms and flow easily. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 14. Which best describes a simple series circuit? A) Electricity flows along one pathway. B) The flow of electricity comes from the switch. C) The flow of electricity comes from the light bulb. D) Electricity flows along many pathways. Show Answer Correct Answer: A) Electricity flows along one pathway. 15. Point to be kept in mind for verification of Ohm's Law is: A) Ammeter and voltmeter should be connected in series. B) Ammeter should be connected in series and voltmeter in parallel. C) Ammeter should be connected in parallel and voltmeter in series. D) Ammeter and voltmeter should be connected in parallel. Show Answer Correct Answer: B) Ammeter should be connected in series and voltmeter in parallel. 16. Cells are connected in: ..... A) Parallel. B) Series. C) No idea, sorry. D) None of the above. Show Answer Correct Answer: A) Parallel. 17. An electromagnet is ..... A) Cannot be turned off. B) A permanent magnet. C) A temporary magnet. D) A short circuit. Show Answer Correct Answer: C) A temporary magnet. 18. A tool that measures the electric current that passing a specific point in an electric circuit is ..... A) Ammeter. B) Voltmeter. C) Switch. D) Load. Show Answer Correct Answer: A) Ammeter. 19. Flow of one Coulumb of charge per second is A) 1 V. B) 1A. C) 1 Ohm. D) 1 W. Show Answer Correct Answer: B) 1A. 20. In a homemade electromagnet, what must you do to increase the number of paper clips their electromagnet picks up? A) Spread the loops of wire apart on the nail so they do not touch. B) Remove the nail from the center of the wire. C) Make the wire longer. D) Increase the number of loops of wire around the nail. Show Answer Correct Answer: D) Increase the number of loops of wire around the nail. 21. What is the source of D.C.? A) Mains. B) Generator. C) Dry Cell. D) None of the above. Show Answer Correct Answer: C) Dry Cell. 22. Fill in the blank: ..... Electricity occurs when a charge on a substance stays in the same place. A) Attract. B) Discharge. C) Current. D) Static. E) Friction. Show Answer Correct Answer: D) Static. 23. If the lights are off, the circuit is A) Closed. B) Open. C) All the above. D) None of the above. Show Answer Correct Answer: B) Open. 24. What type of electricity is produced by and electric eel? A) Static. B) Amazing. C) Current. D) Ground. Show Answer Correct Answer: A) Static. 25. WHICH DEVICE IS USED FOR MEASURING SMALL CURRENT? A) GALVANOMETER. B) AMMETER. C) VOLTMETER. D) DOUBLE AMMETER {SPECIFIC}. Show Answer Correct Answer: A) GALVANOMETER. 26. Which of the following phenomena is an example of current electricity? A) A shock from a doorknob. B) Static cling. C) Electricity flowing through a wire. D) Lightning. Show Answer Correct Answer: C) Electricity flowing through a wire. 27. What is the purpose of a switch in an electric circuit? A) To allow the circuit to be opened or closed. B) To change the direction of the current. C) To provide a push for the current. D) To increase the electric power to the load. Show Answer Correct Answer: A) To allow the circuit to be opened or closed. 28. An electric current is made up of ..... charged electrons. A) Positively. B) Neutrally. C) Negatively. D) None of the above. Show Answer Correct Answer: C) Negatively. 29. The area around a charge in which the electric force is experienced by other charged particles is the ..... A) Electric force. B) Electric current. C) Electric charge. D) Electric field. Show Answer Correct Answer: D) Electric field. 30. Matter through which electrons do NOT flow easily A) Conductor. B) Protons. C) Battery. D) Insulator. Show Answer Correct Answer: D) Insulator. 31. Grounds, fuses and circuit breakers are designed to A) Protect from electric shock. B) Prevent damage to electronics. C) Prevent fires. D) All of the above. Show Answer Correct Answer: D) All of the above. 32. What is the resistance of a 120 volt, 3 amp device? A) 4 ohms. B) 360 ohms. C) 0.025 ohms. D) 40 ohms. Show Answer Correct Answer: D) 40 ohms. 33. Is a measure of how difficult it is for an electric current to flow in a material. A) Electric current. B) Electric circuit. C) Electric resistance. D) None of the above. Show Answer Correct Answer: C) Electric resistance. 34. Which of the following is NOT a source of Direct Current (DC)? A) Solar cells. B) Fuel cells. C) Alternators. D) None of the above. Show Answer Correct Answer: C) Alternators. 35. The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter, the change in the resistance of the wire will be: A) 300%. B) 100%. C) 200%. D) 50%. Show Answer Correct Answer: A) 300%. 36. Volt is equivalent to ..... A) J /sec. B) Ampere / ohm. C) J / coulomb. D) Ampere / coulomb. Show Answer Correct Answer: C) J / coulomb. 37. Each time a lightbulb is added to a series circuit, the other bulbs in the circuit A) Get dimmer. B) Get brighter. C) Stay the same brightness. D) Release more heat. Show Answer Correct Answer: A) Get dimmer. 38. SI unit of resistivity (specific resistance) is ..... A) Ohm. B) Ampere. C) Ohm meter. D) Volt. Show Answer Correct Answer: C) Ohm meter. 39. True or False:Charge is supplied with energy in the internal circuit and the energy is transformed into other forms in the external circuit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 40. Which of the following cannot have an electrical current? A) Video Games. B) Pillow Cases. C) Lightning Bold. D) Washing Machine. Show Answer Correct Answer: B) Pillow Cases. 41. Donna is attempting to make an electromagnet to pick up old nails in and around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails? A) Iron nail. B) Wooden stake. C) Plastic spoon. D) Water. Show Answer Correct Answer: A) Iron nail. 42. Measured in volts. A) Voltage. B) Current. C) Resistance. D) None of the above. Show Answer Correct Answer: A) Voltage. 43. Which of the following statements about conventional current is correct? A) The electrons do not move. B) The electrons flow in all directions. C) Electrons flow from negative to positive. D) Electrons flow from positive to negative. Show Answer Correct Answer: C) Electrons flow from negative to positive. 44. Two wires of resistance 3 ohms each are connected in series. What is the effective resistance of the combination? A) 9 ohm. B) 1 ohm. C) 2 ohm. D) 6 ohm. Show Answer Correct Answer: A) 9 ohm. 45. In a complete circuit, the work done by an electrical energy source in moving an electric charge of 5.0 C from terminal X to terminal Y is 3.5 J.Determine the e.m.f. of the electrical energy source. A) 0.70 V. B) 1.43 V. C) 17.5 V. D) None of the above. Show Answer Correct Answer: A) 0.70 V. 46. The magnetic field lines around a bar magnet A) Are perfectly straight. B) Are only perpendicular to the magnet. C) Spread out from one pole and curve around to the other. D) Cross back and forth over one another. Show Answer Correct Answer: C) Spread out from one pole and curve around to the other. 47. An electric circuit contains an operating heating element and a lit lamp. Which statement best explains why the lamp remains lit when the heating element is removed from the circuit? A) The lamp has less resistance than the heating element. B) The lamp has more resistance than the heating element. C) The lamp and heating element were connected in parallel. D) The lamp and heating element were connected in series. Show Answer Correct Answer: C) The lamp and heating element were connected in parallel. 48. An certain resistor dissipates 0.5 W when connected to a 3 V potential difference. When connected to a 1 V potential difference, this resistor will dissipate: A) 0.167 W. B) 0.5 W. C) 0.056 W. D) 1.5 W. Show Answer Correct Answer: C) 0.056 W. 49. If direction of current is from positive to negative, then it is called A) Electronic current. B) Positronic current. C) Protonic current. D) Conventional current only. Show Answer Correct Answer: D) Conventional current only. 50. What is the flow of electric charges called? A) Electric Current. B) Power. C) Voltage. D) Resistance. Show Answer Correct Answer: A) Electric Current. 51. How do you measure voltage, current, and resistance in a physical circuit? A) Multimeter. B) Voltmeter. C) Odometer. D) Ohmeter. Show Answer Correct Answer: A) Multimeter. 52. Secondary cell is a ..... chemical cell. A) Reversible. B) Irreversible. C) Both A. and B. D) None of these. Show Answer Correct Answer: A) Reversible. 53. Which of the following is a part of the atom? A) Current. B) Circuit. C) Protons. D) Electrodes. Show Answer Correct Answer: C) Protons. 54. The slope of the graph showing the variation of potential difference V on X-axis and current on Y-axis gives conductor's A) Resistance. B) Reciprocal of resistance. C) Resistivity. D) Conductivity. Show Answer Correct Answer: B) Reciprocal of resistance. 55. If 300C of charge flows through the cross section of a wire in one minute, the current flowing through the wire is A) 5A. B) 30A. C) 10A. D) 300 A. Show Answer Correct Answer: A) 5A. 56. How can you increase the total current in a parallel circuit? A) Add more parallel branches with resistive loads. B) Disconnect one of the existing branches. C) Increase the voltage across the circuit. D) Replace all resistive loads with capacitive loads. Show Answer Correct Answer: A) Add more parallel branches with resistive loads. 57. Which of the following formula is correct? A) R = I/V. B) R = VI. C) R = V/I. D) R = VI$^{2}$. Show Answer Correct Answer: C) R = V/I. 58. When no current is flowing through a conductor then A) All free electrons are moving in such a way, so that average speed is zero. B) All free electrons in conductor are in rest. C) Average thermal velocity of free electrons is zero. D) All of these. Show Answer Correct Answer: C) Average thermal velocity of free electrons is zero. 59. How does the capacitance of a capacitor change with the area of the plates? A) The capacitance is only affected by the distance between the plates. B) The capacitance decreases with the area of the plates. C) The capacitance increases with the area of the plates. D) The capacitance remains constant regardless of the area of the plates. Show Answer Correct Answer: C) The capacitance increases with the area of the plates. 60. How does electricity get to our houses? A) Through wireless transmission. B) Through power lines and transformers. C) Through solar panels directly. D) None of the above. Show Answer Correct Answer: B) Through power lines and transformers. ← 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