Practicing Success
a b c d |
a |
$\text{Flux through outer coil } \phi_{outer} = (\mu_0 nkt e^{-\alpha t})4\pi r^2$ $\text{Induced EMF } \xi = -\frac{d\phi}{dt} = -C e^{-\alpha t}(1 - \alpha t)$ $ \text{Induced Current } I = \frac{\xi}{R}$ At t = 0 $ I_{induced} \text{is negative}$ |