When a car drives through the Earth\'s magnetic field, an emf is induced in its

Question

When a car drives through the Earth's magnetic field, an emf is induced in its vertical 68.4cm -long radio antenna.

If the Earth's field (5.0

When a car drives through the Earth's magnetic field, an emf is induced in its vertical 68.4cm -long radio antenna. If the Earth's field (5.0???10?5T) points north with a dip angle of 46? , what is the maximum emf induced in the antenna and which direction(s) will the car be moving to produce this maximum value? The car's speed is 34.0m/s on a horizontal road. E max = mv?

Explanation / Answer

To find maximum emf,
E=BdA/dt
where A is perpendicular area.A= VL sin(46)

E=BVLSin(46)
=5 x 10-5 x 34 x 68.4x 10-2 x sin(46) = 8.3644 x 10-4 v

to increase that car has to move in east-west direction

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