A coil having n turns and resistance R Ω Ω is connected with a galvanometer of resistance 4R Ω Ω . This combination is moved in time t seconds from a magnetic field W 1 Weber/m 2 to W 2 Weber/m 2 . The induced current in the circuit is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The rate of change of flux or emf induced in the coil is e 
.
∴ Induced current, 
Given, 
[here, 
and 
are flux associated with one turn]
Putting the given values in Eq. (i), we get
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