Physics - EMI/AC Question with Solution | TestHub

The following figure shows a conducting disc rotating about its axis in a perpendicular magnetic field$B$. The resistor of resistance$R$is connected between the centre and the rim. The current in the resistor is (The radius of the disc is$5.0\mathrm{ }\mathrm{c}\mathrm{m}$, angular speed$\mathrm{\omega }=10\mathrm{ }\mathrm{r}\mathrm{a}\mathrm{d} {\mathrm{s}}^{-1},\mathrm{ }B=0.40\mathrm{ }\mathrm{T}$and$R=\mathrm{10 }\mathrm{\Omega }$)