Question
Physics Question on Magnetism and matter
A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current-carrying coil in the shape of,
(i) an equilateral triangle of side ‘a’.
(ii) a square of side ‘a’.
The magnetic dipole moments of the coil in each case respectively are:
A
4Ia2 and 3Ia2
B
√3Ia2 and 3Ia2
C
3Ia2 and Ia2
D
3Ia2 and 4Ia2
Answer
√3Ia2 and 3Ia2
Explanation
Solution
The correct answer is option (B): √3Ia2 and 3Ia2