Question

if any compass we are keeping beside of the current then what will happen at close circuit and open circuit??​

Answer 1

here is your answer

If you hold a compass near a wire through which current is flowing, the needle on the compass will be deflected. ... If the current starts to flow again then the deflection happens again.

Answer 2

Explanation:

condition 1st closed Circuit

then compass needle will show flchuations coz moving charge creats magnetic feild

condition 2nd open circuit

then compass needle will not changeas no charge passes throug it

sorry for spelling mistakes