The magnetic flux through a circuit of resistance R changes by ΔΦ in time Δt. Find total charge Q passing through any point in the circuit:
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The magnetic flux through a circuit of resistance R changes by ΔΦ in time Δt. Find total charge Q passing through any point in the circuit:

G1 Physics · Accepted Answer

Step 1: Resistance R carries current I(t) = −(1/R)(dΦ/dt) by Faraday's law and Ohm's law. Step 2: Total charge crossing a point is Q = ∫I dt = −(1/R)∫ dΦ. Step 3: Thus magnitude |Q| = |ΔΦ|/R. Answer B. Final answer: (B) Q=ΔΦ/R.