A conducing rod of length `l` is falling with a velocity `v` perpendicular to a unifrorm horizontal magnetic field `B` . The potential difference between its two ends 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 metal rod of length 2 m is rotating with an angular velocity of 100 rad//sec in a plane perpendicular to a uniform magnetic field of 0.3 T . The potential difference between the ends of the rod is

A metal rod of length 2 m is rotating with an angualr velocity of 100 "rads"^(-1) in plane perpendicular to a uniform magnetic field of 0.3 T. The potential difference between the ends of the rod is

A metal rod of length 2 m is rotating with an angualr velocity of 100 "rads"^(-1) in plane perpendicular to a uniform magnetic field of 0.3 T. The potential difference between the ends of the rod is

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