JEE Main 2024 Physics question
Not in JEE Advanced syllabus
A straight magnetic strip has a magnetic moment of 44 Am². If the strip is bent in a semicircular shape, its magnetic moment will be .......... Am². (Given π = 22/7)
Answer: 28
Solution
The magnetic moment of the straight strip is m = (pole strength) × ℓ = 44. When bent into a semicircle, ℓ = πR, and the
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