Question

You are given a galvanometer,an electronic platingredients equipment, a key and 2 sources ofor electricity.give 2 set ups to find whether the given sources are ac or dc?

Answer 1

If the galvamometer is deflecting toward positive site then it is DC and if it deflect to both positive and negative then is ac because ac has slip which change the direction of both internal and external circuit

Answer 2

Answer:

Explanation:We can connect the galvanometer to any one of the sources using a key in the circuit. If the galvanometer shows definite deflection in a given direction, the source taken is d.c. source. If the given source is a.c. source, the average deflection shown by the galvanometer will be zero..as in ac generator it reflects so fast in both direction that we see the needle as stagnant...