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A line wire is hidden in a wall its posi...

A line wire is hidden in a wall its position can be located with the help of

A

watt-meter

B

moving coil galvanometer

C

magnetic needle

D

the position of the line wire cannot be located without breaking the wall

Text Solution

Verified by Experts

The correct Answer is:
C
A magnetic needle can be used to detect the line wire hidden inside the wall. As, due to the flow of the current, the magnetic field produced would give rise to the deflection in the magnetic needle.
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