Two concentric circular loops of radii 0·08m and 0·1m carries current such that magnetic field at the centre is zero. If the current in the outer loop is 8A clockwise, current in the inner loop is______
A. 6·4 A anticlockwise
B. 6·4 A clockwise
C. 8A anticlockwise
D. 3·2 A clockwise
Answer:A
Two concentric circular loops of radii 0·08m and 0·1m carries current such that magnetic field at the centre is zero. If the current in the outer loop is 8A clockwise, current in the inner loop is______
A. 6·4 A anticlockwise B. 6·4 A clockwise C. 8A anticlockwise D. 3·2 A clockwise