This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Electricity > Class 10 Science Chapter 12 Electricity – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 12 Electricity Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The product of potential difference and electric current is A) Charge, Q. B) Electric energy, E. C) Resistance, R. D) Electric Power, P. Show Answer Correct Answer: D) Electric Power, P. 2. As the resistance in a circuit increases, the electric current ..... A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Decreases. 3. In an electrical circuit three incandescent bulbs A, B and C of rating 40 W, 60 W and 100 W respectively are connected in parallel to an electric source. Which of the following is likely to happen regarding their brightness? A) Brightness of all the bulbs will be the same. B) Brightness of bulb A will be the maximum. C) Brightness of bulb B will be more than that of A. D) Brightness of bulb C will be less than that of B. Show Answer Correct Answer: C) Brightness of bulb B will be more than that of A. 4. What is the commercial unit of electrical energy? A) Kilowatt-hour. B) Kilojoules. C) Joules. D) Watt-hour. Show Answer Correct Answer: A) Kilowatt-hour. 5. Metal with highest resistivity A) Copper. B) Silver. C) Mercury. D) Gold. Show Answer Correct Answer: C) Mercury. 6. Which of the following makes use of series grouping of resistors? A) Various electrical points in a room. B) Fairy lights to decorate. C) Different electrical gadgets in a house. D) None of these. Show Answer Correct Answer: B) Fairy lights to decorate. 7. A simple circuit comprises of, conductors, switch, load and? A) Ammeter. B) Cell. C) Voltmeter. D) Resistor. Show Answer Correct Answer: B) Cell. 8. Two wires A and B of equal masses and of the same material are taken.the lenght of the wire A is half the lenght of wire B. if the resistance of the wire A is 24 ohm, the resistances of wire B will be A) 48 ohm. B) 96 ohm. C) 12 ohm. D) 4 ohm. Show Answer Correct Answer: B) 96 ohm. 9. Let's think:If the voltage is increased and the resistance stays the same, current will ..... A) Increase. B) Decrease. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increase. 10. A voltmeter is used to find the potential difference in any electric circuit which of the given statements are correct A) A voltmeter is a high resistance device and is connected in series circuit. B) A voltmeter is a low resistance device and is connected in parallel circuit. C) A voltmeter is a low resistance device and is connected in series circuit. D) A voltmeter is a high resistance device and is connected in parallel circuit. Show Answer Correct Answer: D) A voltmeter is a high resistance device and is connected in parallel circuit. 11. SI unit of specific resistance is A) Volt. B) Ohm. C) Ohm metre. D) Ampere. Show Answer Correct Answer: C) Ohm metre. 12. The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light. A) Resistance. B) Voltage. C) Current. D) Circuit. Show Answer Correct Answer: A) Resistance. 13. Resistivity of a metal depends on A) Lenght. B) Area of cross section. C) All of the above. D) None of the above. Show Answer Correct Answer: D) None of the above. 14. One horsepower is equal to A) 647 watt. B) 674 watt. C) 746 watt. D) 764 watt. Show Answer Correct Answer: C) 746 watt. 15. A coil in the heater consume power P on passing current. If it is cut into halves and joined in parallel, it will consume power- A) 4P. B) P. C) 2p. D) P2. Show Answer Correct Answer: A) 4P. 16. Current is ..... A) Measured in volts. B) Moving protons. C) Measured in ohms. D) Moving electrons. Show Answer Correct Answer: D) Moving electrons. 17. A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is- A) 10 A. B) 2.5 A. C) 7.5 A. D) 5.0 A. Show Answer Correct Answer: A) 10 A. 18. A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 $\Omega$. The current passing through it is A) 16 A. B) 8 A. C) 4 A. D) 2 A. Show Answer Correct Answer: B) 8 A. 19. The SI unit of resistivity is A) Ohm, $\Omega$. B) Ohm meter, $\Omega$ m. C) Meter, m. D) None of the above. Show Answer Correct Answer: B) Ohm meter, $\Omega$ m. 20. In the rule of Om is shown between two factors, namely A) Electric current and divisions. B) The divisions and the divisions. C) Electric rods and electric heating. D) The natural quality and heat of the carrier. Show Answer Correct Answer: A) Electric current and divisions. 21. What is the highest and lowest total resistance which can be secured by combination of four coils of ressistance 4ohms, 8ohms, 12ohms and 24ohms A) 36, 2. B) 24, 2. C) 48, 2. D) 52, 4. Show Answer Correct Answer: C) 48, 2. 22. What is the effect of temperature on the resistance of a conductor? A) Temperature has no effect on the resistance of a conductor. B) The resistance of a conductor increases with temperature. C) The resistance of a conductor remains constant regardless of temperature. D) The resistance of a conductor decreases with temperature. Show Answer Correct Answer: B) The resistance of a conductor increases with temperature. 23. What is the significance of a fuse in an electrical circuit? A) The significance of a fuse in an electrical circuit is to protect the circuit from overcurrent by breaking the circuit when the current exceeds safe levels. B) A fuse is used to enhance the voltage in an electrical circuit. C) A fuse increases the current flow in a circuit. D) A fuse acts as a switch to turn the circuit on and off. Show Answer Correct Answer: A) The significance of a fuse in an electrical circuit is to protect the circuit from overcurrent by breaking the circuit when the current exceeds safe levels. 24. Electric potential is a: A) Sometimes scalar and sometimes vector. B) Neither scalar nor vector. C) Scalar quantity. D) Vector quantity. Show Answer Correct Answer: C) Scalar quantity. 25. What happens to the current in a series circuit if one component is removed? A) The current in the entire circuit stops. B) The current in the entire circuit increases. C) The current in the entire circuit stays the same. D) None of the above. Show Answer Correct Answer: A) The current in the entire circuit stops. 26. Which is the right form of Ohm's Law? A) I=R/V. B) V=R/I. C) V=I/R. D) I=V/R. Show Answer Correct Answer: D) I=V/R. 27. The space around a magnet where the force of a magnet can attract best is called ..... A) Bar magnet. B) Magnetism. C) Horseshoe magnet. D) Magnetic field. Show Answer Correct Answer: D) Magnetic field. 28. Resistance of alloys decreases with increase in temprature A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 29. Give the name of materials which contain lot of free electrons A) Insulators. B) Conductors. C) Semi conductors. D) None of the above. Show Answer Correct Answer: B) Conductors. 30. A torch bulb is rated 2.5 V and 750 mA. Calculate its power A) 1. B) 4. Kho. C) Swine. D) Or. Show Answer Correct Answer: A) 1. 31. Electricity that flows in a closed path is called a A) Path. B) Current. C) Circuit. D) None of the above. Show Answer Correct Answer: C) Circuit. 32. What is the unit of electric route A) Jolly. B) Colombo. C) Volt. D) Empeare. Show Answer Correct Answer: D) Empeare. 33. What is melting point of tungsten? A) 3350$^\circ$C. B) 3380$^\circ$C. C) 3370$^\circ$C. D) 3390$^\circ$C. Show Answer Correct Answer: B) 3380$^\circ$C. 34. The SI unit of resistance is: A) Newton. B) Watt. C) Ohm. D) Joule. Show Answer Correct Answer: C) Ohm. 35. What happens to the total resistance in a series circuit when more resistors are added? A) It becomes zero. B) It increases. C) It decreases. D) It remains the same. Show Answer Correct Answer: B) It increases. 36. Two electric bulbs have resistances in the ratio 1:2. If they are joined in series, the energy consumed in these are in the ratio A) 4:1. B) 1:1. C) 2:1. D) 1:2. Show Answer Correct Answer: D) 1:2. 37. The unit of electrical charge is A) Joule. B) Was/ampere. C) Coulomb. D) Coulomb/ sec. Show Answer Correct Answer: C) Coulomb. 38. Which instrument is used to measure the current? A) Ammeter. B) Rheostat. C) Voltmeter. D) Galvanometer. Show Answer Correct Answer: A) Ammeter. 39. Potential difference is named after A) Alessandro Volts. B) Other marie ampere. C) Alessandra Volts. D) Alessandro Volta. Show Answer Correct Answer: D) Alessandro Volta. 40. What is the unit of electric charge? A) Watt. B) Coulomb. C) Volt. D) Ohm. Show Answer Correct Answer: B) Coulomb. 41. The rate of flow of an electric charge is known as: A) Electric potential. B) Electric conductance. C) Electric current. D) None of these. Show Answer Correct Answer: C) Electric current. 42. A circuit breaker contains a thin strip of metal that melts if too much current passes through it. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 43. You are given n identical wires, each of resistance R. When these are connected in parallel, the equivalent resistance is X. When these will be connected in series, then the equivalent resistance will be A) Xn. B) Xn$^{2}$. C) X/n. D) NX. Show Answer Correct Answer: B) Xn$^{2}$. 44. A closed circuit means the electricity can ..... A) Flow through all parts. B) Be cut off from the electrons. C) More power is gained. D) Stop working. Show Answer Correct Answer: A) Flow through all parts. 45. Which of the following is a good conductor of electricity? A) Glass. B) Silver. C) Wood. D) Rubber. Show Answer Correct Answer: B) Silver. 46. For resistors connected in series, the effective resistance is A) The sum of individual resistance. B) The sum of the reciprocal of the individual resistance. C) The product of the individual resistance. D) The product of the reciprocal of the individual resistance. Show Answer Correct Answer: A) The sum of individual resistance. 47. Electric current is defined as A) Negative terminal to positive terminal. B) The flow rate of electric charges through a conductor. C) Positive terminal to negative terminal. D) Detect electric current. Show Answer Correct Answer: B) The flow rate of electric charges through a conductor. 48. 1 mV is equal to: A) 10$^{-6}$ volt. B) 10$^{-3}$ volt. C) 1000 volt. D) 10 volt. Show Answer Correct Answer: B) 10$^{-3}$ volt. 49. Three bulbs of 100 W, 200 W and 60 W are connected in series to the main supply of 220 V. The current will be:A. Equal in 100 W and 200 W.B. Equal in 200 W and 60 W.C. Different in all bulbs.D. None of the above A) A, B and C. B) B and D. C) A and C. D) A and B. Show Answer Correct Answer: D) A and B. 50. Conventionally the direction of electric current is from? A) Positive to Negative Terminal. B) Negative to Positive Terminal. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive to Negative Terminal. 51. WHICH OF THE FOLLOWING IS CURRENT? A) Rate of change of current is charge. B) Rate of change of charge is electrical power. C) Rate of change of charge is current. D) Rate of change of energy is current. Show Answer Correct Answer: C) Rate of change of charge is current. 52. To protect the house hold electrical appliances from overloading due to excess current A) Fuse wire. B) MCB. C) Both (a) and (b). D) None. Show Answer Correct Answer: C) Both (a) and (b). 53. In the formula of ohm's law which is a constant? A) P (rho). B) V (voltage). C) R (resistance). D) I (current). Show Answer Correct Answer: C) R (resistance). 54. Which of the following materials is commonly used as an insulator? A) Silver. B) Aluminium. C) Copper. D) Rubber. Show Answer Correct Answer: D) Rubber. 55. Explain how household wiring is typically arranged in terms of series and parallel circuits. A) Household wiring is primarily arranged in parallel circuits. B) Household wiring is exclusively arranged in a single circuit. C) Household wiring uses a combination of series and parallel circuits equally. D) Household wiring is primarily arranged in series circuits. Show Answer Correct Answer: A) Household wiring is primarily arranged in parallel circuits. 56. What resistance is needed to cause a 20A current flow because of a 100V battery? A) 0.2o. B) 2000. C) 5th. D) 120. Show Answer Correct Answer: C) 5th. 57. Two types of circuits are A) Parallel and magnetic. B) Electromagnetic and series. C) Series and parallel. D) None of the above. Show Answer Correct Answer: C) Series and parallel. 58. What are the applications of Ohm's Law in daily life? A) Applications of Ohm's Law include circuit design, electrical troubleshooting, appliance safety, and energy efficiency. B) Ohm's Law is applied in fashion design. C) Ohm's Law helps in gardening techniques. D) Ohm's Law is used for cooking recipes. Show Answer Correct Answer: A) Applications of Ohm's Law include circuit design, electrical troubleshooting, appliance safety, and energy efficiency. 59. To complete a circuit the switch must be A) Unattached. B) Closed. C) Open. D) It depends. Show Answer Correct Answer: B) Closed. 60. The amount of work done in joules, when one unit electric charge moves from one point to another point in an electric circuit is called: A) Electric resistance. B) Potential difference. C) Electric conductance. D) Electric current. Show Answer Correct Answer: B) Potential difference. ← PreviousNext →Related QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 12 Electricity Quiz 1Class 10 Science Chapter 12 Electricity Quiz 2Class 10 Science Chapter 12 Electricity Quiz 3Class 10 Science Chapter 12 Electricity Quiz 5Class 10 Science Chapter 12 Electricity Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books