A fan blade of length 2 a rotates with frequency f cycle' per second perpendicular to magnetic field B . Then, potenial difference between centre and end of blade is

A fan blade of length 2a rotates with frequency f cycles per second perpendicular to a magnetic field B. Find the p.d between the centre and the end of the blade.

A fan blade of length 1//sqrt(pi) metre rotates with frequncy 5 cycle per second perpendicular to a magnetic field 10 tesla. What is potential diffrence between the centre and the end of blade ?

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 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