Question

A coil 10 turns and area `10^(-2)m^(2)` rotates in a magnetic field of 0.25 tesla. If the maximum induced e.m.f. is 25 mV, then the angular speed of rotation of the coil will be
A. `0.5 rad//s`
B. `1 rad//s`
C. `2 rad//s`
D. `3 rad//s`

Answer 1

Correct Answer - B
`e_(max) = nAB omega`
`:. 25 xx 10^(-3) = 10 xx 10^(-2) xx 25 xx 10^(-2) xx omega`
`:. Omega = 1 rad//s`.