Question

A conductor carry 16 a of electroc current find no of free electron taking part in reaction

Answer 1

The electrons do literally move, both in AC and DC. However, the movement of electrons and the transfer of energy do not occur at the same speed. The key is that there are already electrons filling up the wire all along its length. A common analogy for electrical current in a circuit is the flow of water through pipes.

Imagine a water pump connected to a loop of pipes. It has the ability to pump water around the loop, supplying energy to the system like a battery does to a circuit. Suppose we run the pipes to the other side of the room and attach a turbine, which is connected by gears to a fan. Whenever the water flows through the turbine, the fan will turn.