The earth’s magnetic field at a given point is 0.5 x10-5 Wb/m2. This field is to be annulled by magnetic induction at the center of the circular conducting loop of a radius of 5 cm. The current required to be flown in the loop is near-
A. 0.2 A
B. 0.4 A
C. 4 A
D. 40 A
Answer:B
The earth’s magnetic field at a given point is 0.5 x10-5 Wb/m2. This field is to be annulled by magnetic induction at the center of the circular conducting loop of a radius of 5 cm. The current required to be flown in the loop is near-
A. 0.2 A B. 0.4 A C. 4 A D. 40 A