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The magnetic flux through a coil placed in a magnetic field is given by: $\phi= (5t^3 + 4t^2+2t-5) Wb$. The resistance of the coil is 10 Ω. The induced current through the coil at $t = 2\, s$ is |
7.8 A 15.6 A 0.78 A 3.9 A |
7.8 A |
The correct answer is Option (1) → 7.8 A |
