MHT CET · Physics · Magnetic Effects of Current
The relation between magnetic moment \((\mathrm{M})\) of a current carrying circular coil and length (L) of the wire used is
- A \(M \alpha L\)
- B \(\mathrm{M} \alpha \frac{1}{\mathrm{~L}}\)
- C \(M \alpha L^2\)
- D \(\mathrm{M} \propto \frac{1}{\mathrm{~L}^2}\)
Answer & Solution
Correct Answer
(C) \(M \alpha L^2\)
Step-by-step Solution
Detailed explanation
\(M = NI(\pi r^2)\) \(L = N(2\pi r)\)
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