A magnetic compass needle is placed in the plane of paper near point A . In which plane should a straight current carrying conductor be placed so that is passes through A and there is no change in the deflection of the compass? under what conditions is the deflection is maximum and why????
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5
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In the magnetic north
south direction
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24
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We know that when the magnetic field and the direction of current are perpendicular to each other, the deflection is maximum. But when they are in the same plane, no deflection takes place. So, the current carrying conductor needs to be placed in the same plane as the magnetic compass to attain no deflection.
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