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2 circular coils made of the same mterial with coil B having half the radius of coil A. what is the ratio of current through them so tha the magnetic field at the centre is same?
Dear student B = 0/4(pi) * (2*pi* i)/r Use this as r1 = 2 * r2NowMagnetic field is same hencei1 = 2* i2 RegardsArun (askIITians forum expert)
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