The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields________?
Aa soft iron shielding is used
Bmeter is surrounded by strong magnetic fields
Ca shielding of anon-magnetic material is used
Da plastic shielding is provided
Correct answer
A. a soft iron shielding is used
Explanation
The correct answer is a soft iron shielding is used.