Electronic devices that convert D.C. power into A.C. power are called
Answer : C. Inverters
Which of the following is an insulator?
Answer : C. Glass
Answer : D. generates induced e.m.f.
Can D.C. voltage be used in a transformer
Answer : B. no
In a step-up transformer, the number of turns
Answer : B. in the secondary is more than in the primary
Two wires have their lengths,diameters and resistivities, all in the ratio of 1:2. If the resistance of the thinner wire is 10ohms,the resistance of the thicker wire shall be
Answer : B. 10 ohms