A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 ms, at right angles to the horizontal component of the earth's magnetic field, `0.30 xx 10^(-4)Wb m^(2)`
Which end of the wire is at the higher electrical potential?

Explanation

Given, velocity of straight wire =5 m/s
Magnetic field of straight wire, `B= 0.30 xx 10^(-4)" Wb/m"^(2)` length of wire l= 10m
As the direction of induced emf or current is from west to east, the west end of the wire is at higher potential. `(therefore" current always flows from a point at higher potential to a point at lower potential").`