To protect a material from the influnce of an external ma...
To protect a material from the influnce of an external magnetic field, the materials should be kept
square steel ring
triangular zinc ring
soft iron ring
loop of copper wire
Correct answer is C
In order to protect a material from the influence of an external magnetic field, the material is placed in a soft iron ring, usually referred to as magnetic screening.
Formation of hydrogen bubbles at the copper plate of a primary cell is called? ...
Which of the following substances does not conduct electricity? ...
For total internal reflection to occur, I. light must be travelling from an optically more dense ...
To convert an alternating current dynamo into a direct current dynamo, the ...