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A copper rod which is 1 centimetre in diameter carries a current of 5 amps.
The current is distributed uniformly over the rod.
The magnetic field half way among the axis of the rod and its outside edge is:
Ans - Circles the axis of the rod
Properties of Lines of Flux To make the imaginary lines of flux describe the behaviour of the magnetic field we must give them appropriate properties. Thus lines of flux have
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