Question

A metal strip 7.63 cm long, 0.857 cm wide, and 0.601 mm thick moves with constant velocity through a uniform magnetic field B = 1.32 mT directed perpendicular to the strip, as shown in the figure. A potential difference of 5.46 µV is measured between points x and y across the strip. Calculate the speed v.

Answer 1

Here,

let the velocity of the strip is v

as the potential difference is across the width of the strip

L = 0.857 cm

as induced emf = B * v * L

5.46 *10^-6 = 1.32 *10^-3 * 8.57 *10^-3 * v

v = 0.483 m/s

the speed v is 0.483 m/s