31. An electric iron of 1250 W is used 3 h per day. The amount of energy used by that electric iron in a day will be . . . . . . . . . units.
32. A compass needle cannot be used to detect
33. When two or more cells are connected to each other by opposite terminals, then it is called as . . . . . . . .
34. If potential difference and current flowing through a wire is increased twice each, then electric power
35. A current of 0.5 A flowing through resistance of 10 Ω. The amount of electric charge that flows through this resistance in one minute will be-
36. Which of the following is proportional to the potential difference?
37. When the length of the wire is doubled. Ammeter reading decreases . . . . . . . .
38. A.C. is converted into DC by . . . . . . . .
39. The 'Choke' used with a tube light is basically
40. If the resistance of a circuit is doubled to keep the voltage constant, the electric current flowing in the circuit will be . . . . . . . .
Read More Section(Electricity and Magnetism)
Each Section contains maximum 100 MCQs question on Electricity and Magnetism. To get more questions visit other sections.