AP EAMCET · PHYSICS · Magnetic Effects of Current
Magnetic induction at the centre of a circular loop of area \(\pi \mathrm{m}^2\) is 0.1 tesla. The magnetic moment of the loop is ( \(\mu_0=\) permeability of air \()\)
- A \(\frac{0.1 \pi}{\mu_0}\)
- B \(\frac{0.2 \pi}{\mu_0}\)
- C \(\frac{0.3 \pi}{\mu_0}\)
- D \(\frac{0.4 \pi}{\mu_0}\)
Answer & Solution
Correct Answer
(B) \(\frac{0.2 \pi}{\mu_0}\)
Step-by-step Solution
Detailed explanation
Magnetic induction at the centre of circular loop \[ B=\frac{\mu_0}{2} \frac{n i}{r} \] Magnetic moment of the loop…
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