Correct answer: 4
The induced current (I) is related to the rate of change of magnetic flux (dΦ/dt) by Faraday's law: I = (1/R) * |dΦ/dt|. From the graph, the peak current is 0.4 A, and the resistance is 10 Ω, so the peak emf is 0.4 × 10 = 4 V. The total change in flux is the area under the emf vs. time graph, which equals 4 Weber.