6. Current in length of copper wire. Two students hold a 7.6 m length of copper wire horizontally, in an east-west direction, in the school yard. The wire is
moved vertically downwards at a speed of 0.30 ms?
Given that, in this yard, the horizontal component of the Earth's magnetic field is 4.0 x 10-5 T, and perpendicular to the
wire, calculate the emf detected, to two significant figures, by a very sensitive meter placed across the ends of the wire.