Question 14.5: A horizontal straight wire 10m long extending from east to west is falling with a speed of 5.0m/s, at right angles to the horizontal component of the earth’s magnetic field, 0.30 x 10-4 wbm^-2
(a) what is the instantaneous value of the emf induced in the wire?
(b) what id the direction of emf?
(c) which end of the wire is at the higher electrical potential?