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9. Two long parallel conductors carry
currents i1 = 3A and i2 = 3A both are
directed into the plane of paper. The
magnitude of resultant magnetic field at
point 'P' is
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Explanation:
according to ampere's circuital law ,
the magnetic field at P will be ,
Miu0(3+2)
= 5miu0
( if we take downward currents to be positive )
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