Ncert Exercises & Solutions

A rectangular loop of wire ABCD is kept close to an infinitely long wire carrying a current $I (t) = I_{0} (1 - t / T) for 0 \leq t \leq T$ and I(0)=0 for t>T (figure). Find the total charge passing through a given point in the loop, in time T. The resistance of the loop is R.