Physics Past Questions and Answers

An ammeter can be adapted to measure potential difference by using a

The region around a magnet in which magnetic force can be expressed is known as

In an ac circuit when the supply voltage frequency is equal to the resonant frequency, the current

The energy stored in a simple cell is

Which of the following conditions occur at resonance in a series RLC circuit? i. Impedance equal resistance ii. Current is maximum iii. Reactance are maximum iv. Current and voltage are 90<sup style='font-size: smaller;'>o</sup> out of phase