What current will give full-scale deflection if the magnetic field weakens to 0.610 of its original value? µA
Force = Current x Magnetic field
New current = (Old current) x (Old Magnetic field) / (New magnetic Field) = 100 µA
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Force = Current x Magnetic field
New current = (Old current) x (Old Magnetic field) / (New magnetic Field) = 100 µA