Question

A circular copper disk of diameter D=10 cm rotates at frequency =1800 rev/min about an axis through its center and at right angles to the disk. A uniform magnetic field B of 10,000 gauss is perpendicular to the disk. What potential difference e develops between the axis of the disk and its rim? Express your answers in terms of variables first and then plug in numbers afterword

Answer 1

Answer:

Induced current is 0.226 A

Explanation:

To calculate potential difference we have

$E =1/2Bomega*r2 =1/2*1*1800*3.14*0.05=141.3$

putting values we get

the p.d is 141.3