AP EAMCET · PHYSICS · Magnetic Properties of Matter
The intensity of the magnetic induction field at the centre of a single turn circular coil of radius \(5 \mathrm{~cm}\) carrying current of \(0.9 \mathrm{~A}\).
- A \(36 \pi \times 10^{-7} \mathrm{~T}\)
- B \(9 \pi \times 10^{-7} \mathrm{~T}\)
- C \(36 \pi \times 10^{-6} \mathrm{~T}\)
- D \(9 \pi \times 10^{-6} \mathrm{~T}\)
Answer & Solution
Correct Answer
(A) \(36 \pi \times 10^{-7} \mathrm{~T}\)
Step-by-step Solution
Detailed explanation
The intensity of magnetic induction field \(B=\frac{\mu_0 i}{2 r}\) \(=\frac{4 \pi \times 10^{-7} \times 0.9}{2 \times 5 \times 10^{-2}}\) \(B=36 \pi \times 10^{-7} \mathrm{~T}\)
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