Figure shows a conducting disc rotating about its axis in a perpendicular uniform and constant magnetic field B. A resistor of resistance R is connected between the centre and the rim. The radius of the disc is 5.0 cm, angular speed `omega=40 rad//s, B=0.10 T " and " R=1 Omega`. The current through the resistor is

The following figure a conducting disc rotating about its axis in a perpendicular magnetic field B. The resistor of resistance R is connected between the centre and the rim. The current in the resistor is (The radius of the disc is 5.0 cn=m, angular speed omega=10 rad s^(-1) , B = 0.40 T and R = 10 Omega )

The following figure a conducting disc rotating about its axis in a perpendicular magnetic field B. The resistor of resistance R is connected between the centre and the rim. The current in the resistor is (The radius of the disc is 5.0 cn=m, angular speed omega=10 rad s^(-1) , B = 0.40 T and R = 10 Omega )

shows a conducting disc rotating about its axis in a perpendicular magnetic field B. A resistor of resistance R is connected between the centre and the rim. Calculate the current in the resistor. Does it enter the disc or leave it at the centre? The radius of hte disc is 5.0 cm , angular speed omega = 10 rad/s, B = 0.40 T and R = 10 Omega .

A non-conducting disk of radius R is rotating about its own axis with constant angular velocity omega in a perpendicular uniform magnetic field B as shown in figure. The emf induced between centre and rim of disk is

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 copper disc of radius 0.1 m is rotated about its natural axis with 10 rps in a uniform magnetic field of 0.1 T with its plane perpendicular to the field, The emf induced across the radius of the disc is