Question 6
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6. Current in length of copper wire.
Two students hold a 7.3 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
0.10 ms?¹.
Given that, in this yard, the horizontal component of the
Earth's magnetic field is 4.0 x 10?? 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.
Answer:
0.0292 mV
X
You did not give the correct unit.
