(a) A straight conducting wire is placed perpendicularly to the earth
magnetic field at a location. The earth magnetic field at the location has a
magnitude of 0.450 G. Determine the current that must flow in the wire for a
9.50 cm length of the wire to experience a magnetic force of 1.50 N due to the
earth magnetic field.
[1 T = 104 G]
(b) A wire of length 1.0 m carries a current of 1.0 A. The wire is formed into a
circular coil and the circular coil has one turn only. Determine the magnitude of
the maximum torque which is developed on the coil if it is placed in magnetic
field of 2.0 T.
Answers: 3
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(a) A straight conducting wire is placed perpendicularly to the earth
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