Questions
A coil having n turns and resistance R is connected with a galvanometer of resistance 4R . This combination is moved in time t seconds from a magnetic field W1 weber to W2 weber. The induced current in the circuit is :
detailed solution
Correct option is B
Induced current = eR=1R-∆ϕ∆t =-15RnW2-nW1t =-nW2-W15RtTalk to our academic expert!
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The magnetic field in the cylindrical region shown in figure increases at a constant rate of 20 mT/s. Each side of the square loop ABCD has a length of 1 cm and resistance of Find the current in the wire AB if the switch S is closed
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