MHT CET 2026 Physics question
The ratio of magnetic field at the centre of the current carrying circular loop and its magnetic moment is 'x'. When both the current and radius are tripled, then the ratio will be
Answer: (A)
Solution
Magnetic field at the centre of a loop: . Magnetic moment . Ratio . The current cancels, so the ratio depends only on . With the radius tripled, $x' =
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