A fiat circular coil, carrying a current, has a magnetic moment μ
the direction of μ is along the normal to the plane of the coil
μ has only magnitude; it does not have direction
the direction of μ depends on the direction of the current flow
the direction of μ does not change if the current in the coil is reversed
A
the direction of μ does not change if the current in the coil is reversed
B
μ has only magnitude; it does not have direction
C
the direction of μ is along the normal to the plane of the coil
D
the direction of μ depends on the direction of the current flow
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Solution
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The area vector →A is upward if the current in the loop is anti-clockwise and downward if the current in the loop is clockwise.
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