JEE Main 2004 Physics question
A coil having turns and resistance 4RΩ. This combination is moved in time seconds from a magnetic field weber to weber. The induced current in the circuit is
Answer: (2)
Solution
In the standard question the coil (resistance R) is joined to a galvanometer of resistance 4R, so the total resistance is 5R; and are the flux (linkages) through the circuit. Average induced e.m.f.
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