The phase difference between the magnetic flux linked with a coil rotating in a uniform magnetic field and the induced $e.m.f.$ produced in it is

$A$ circular coil of resistance $R$,area $A$,and number of turns $N$ is rotated about its vertical diameter with angular speed $\omega$ in a uniform magnetic field of magnitude $B$. The average power dissipated in a complete cycle is:

$A$ circular coil of area $200 \,cm^2$ and $50$ turns is rotating about its vertical diameter with an angular speed of $40 \,rad/s$ in a uniform horizontal magnetic field of magnitude $2 \times 10^{-2} \,T$. The maximum emf induced in the coil is (in $\,V$)

When a rectangular coil is rotated in a uniform magnetic field about an axis passing through its centre and perpendicular to the field,the emf induced in the coil varies

$A$ square-shaped coil of area $70 \, cm^2$ having $600$ turns rotates in a magnetic field of $0.4 \, Wb/m^2$,about an axis which is parallel to one of the sides of the coil and perpendicular to the direction of the field. If the coil completes $500$ revolutions in a minute,the instantaneous emf when the plane of the coil is inclined at $60^{\circ}$ with the field will be $..........V$. (Take $\pi = \frac{22}{7}$)

The number of turns in the coil of an $AC$ generator is $5000$ and the area of the coil is $0.25\,m^2$. The coil is rotated at the rate of $100\,cycles/sec$ in a magnetic field of $0.2\,Wb/m^2$. The peak value of the electromotive force $(EMF)$ generated is nearly......$kV$.