Question

The diagram below shows copper wire wrapped around a cardboard tube which is then attached to a galvanometer A galvanometer detects and measures small amounts of electric current

Answer 1

moving a magnet back and forth inside the tube.

Answer 2

Explanation :

In the given diagram shows copper wire wrapped around a cardboard tube which is then attached to a galvanometer. A galvanometer detects and measures small amounts of electric current.

We know that moving magnets produce an electric current. This is known as the Faraday law of electromagnetic induction.

So, the correct option is (C) " moving a magnet back and forth inside the tube ".