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A copper rod which is 1 centimetre in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis of the rod and its outside edge is:
a) Zero.
b) Pointing radially outward
c) Pointing radially inward
d) Circles the axis of the rod
Ans:
The magnetic field half way among the axis of the rod and its outside edge is circles the axis of the rod.
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