A circular loop of a wire and a long straight wire carry currents Ic and Il respectively as shown in figure. Assuming that these are palced in the same plane, the magnetic field will be zero at the centre O of the loop, when separation H is
A
IlRIcπ
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B
IcRIlπ
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C
IcπIlR
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D
IlπIcR
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Solution
The correct option is AIlRIcπ Given: A circular loop of a wire and a long straight wire carry currents Ic and Il respectively.
Solution: Magnetic field due to a circular loop at the