A conducting wheel in which there are four rods of lengthe l as shown in figure is rotating with angular velocity `omega` in a uniform magnetic field B. The induced potential difference between its centre and rim will be

A conducting wheel in which there are four rods of length l is rotating with angular velocity omega in a uniform magnetic field B . The induced potential difference between its centre and rim will be __

A conducting wheel in which there are four rods of length 25 cm as shown in the figure is rotating with constant velocity 20 rad/s in a uniform magnetic field 8 T . The induced potential difference between its centre and rim will be

A circular metalic disc of radius a is rotating with a uniform angular velocity (w) perpendicularly to the uniform magnetic field vecB . The potential difference between the centre and the rim of the disc is—

A conducting rod of length l is rotating with constant angular velocity omega about point O in a uniform magnetic field B as shown in the figure . What is the emf induced between ends P and Q ?

A conducting rod of length l is rotating with constant angular velocity omega about point O in a uniform magnetic field B as shown in the figure . What is the emf induced between ends P and Q ?