A toroidal solenoid with NNN turns and mean radius rrr carries a current III. A single loop of wire is wrapped around the toroid. If the current in the solenoid is changing at a rate dIdt\frac{dI}{dt}dtdI, what is the induced emf in the single loop?
0
μ0NAdIdt\mu_0 N A \frac{dI}{dt}μ0NAdtdI
μ0N2πrAdIdt\mu_0 \frac{N}{2\pi r} A \frac{dI}{dt}μ02πrNAdtdI
μ02πrAdIdt\frac{\mu_0}{2\pi r} A \frac{dI}{dt}2πrμ0AdtdI
Related Questions
In circular coil, when no. of turns is doubled and resistance becomes 14th\frac{1}{4}th41th of initial, then inductance becomes
4 times4\,\,times4times
2 times2\,\,times2times
8 times8\,\,times8times
No change
