Two circular coils made from same wire but radius of 
coil is twice that of 
coil. If magnetic field at their centres is same then ratio of potential difference applied across them is 
to 
coil)
Text Solution
Verified by ExpertsThe correct answer is:
C
or 
Where 
is the potential difference applied across 1st coil and 
is resistance of the coil.
Similarly, 
or 
(1) (2)
According to the question, 
But 
, so 
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