A current increases uniformly from zero to one ampere in 
, in a coil of inductance 
. The induced emf will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Identify the inductance of the coil: 
Calculate the rate of change of current: 
.
Use Faraday's law to calculate the induced e.m.f.: 
.
The magnitude of the induced e.m.f. is 1 V.
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