Question
Physics Question on Magnetic Field due to a Current Element
Two concentric circular coil of radius 20 cm and 30 cm carries current 2A and 3A respectively in opposite direction then magnetic field at centre will be :-
A
4π × 10-7
B
2π × 10-7
C
2 × 10-7
D
Zero
Answer
Zero
Explanation
Solution
The correct option is (D): Zero.