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Two circular coils 1 and 2 are made from...

Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the ratio of potential difference applied across them, so that the magnetic field at their centres is the same ?

A

3

B

4

C

6

D

2

Text Solution

Verified by Experts

The correct Answer is:
b
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