Question
Physics Question on Electromagnetic induction
The strength of earth's magnetic field at a point is 0.4×10-5 T. If this field is to be annulled by the magnetic induction produced at the centre of a circular conducting loop of radius π cm, the current to be sent through the loop is
A
2A
B
0.15A
C
1.5A
D
0.2A
E
1A
Answer
0.2A
Explanation
Solution
The correct option is (D) : 0.2A