A coil having $n$ turns and resistance $R\Omega $ is connected with a galvanometer of resistance $4R\Omega .$ This combination is moved in time $t$ seconds from a magnetic field ${W_1}$ weber to ${W_2}$ weber. The induced current in the circuit is

Question

${{\left( {{W_2} - {W_1}} \right)} \over {Rnt}}$

$ - {{n\left( {{W_2} - {W_1}} \right)} \over {5\,\,Rt}}$

$ - {{\left( {{W_2} - {W_1}} \right)} \over {5\,\,Rnt}}$

$ - {{n\left( {{W_2} - {W_1}} \right)} \over {Rt}}$

Solution

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