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To detect electric current using a galv...

To detect electric current using a galvanoscope, the plane of the coil is placed along magnetic meridian. What happens if the plane of coil is along east-west direction ?

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Will the magnetic needle show any deflection if the magnetic field produced due to the flow electric current is along the same direction as the earth's magnetic field?
How do you detect the flow of electric current in such cases?
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