I=−R′Idtdϕ or, I =−R′1n[t2−t1W2−W1] ( W1 and W2 are not the magnetic field, but the values of flux associated with one turn of coil) I=(R+4R)−1tn(W2−W1) or, I=−5Rtn(W2−W1)
JEE Main 2004 — Physics Electromagnetism
A coil having n turns and resistance 4RΩ. This combination is moved in time t seconds from a magnetic field W1 weber to W2 weber. The induced current in the circuit is
Held on 30 Apr 2004 · Verified 6 Jul 2026.
−5RntW2−W1
−5Rt(W2−W1)
− Rnt W2−W1
−Rtn(W2−W1)
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