The earth's magnetic field at a given point is 0.5 × 10⁻⁵ Wb/m². This field is to be annulled by magnetic induction at the center of a circular conducting loop of radius 5.0 cm. The current required to be flown in the loop is nearly
A
0.2 Å
B
0.4 Å
C
4 Å
D
40 Å

Question

The earth's magnetic field at a given point is 0.5 × 10⁻⁵ Wb/m². This field is to be annulled by magnetic induction at the center of a circular conducting loop of radius 5.0 cm. The current required to be flown in the loop is nearly

A

0.2 Å

B

0.4 Å

C

4 Å

D

40 Å

Accepted Answer

0.4 Å

Answer

0.2 Å

Answer

4 Å

Answer

40 Å

AIIMS 2003 Physics Magnetic Fields MCQ Question

Correct Answer

Detailed Explanation

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