MHT CET · Physics · Electromagnetic Induction
A coil of ' n ' turns and area ' A ' is suddenly removed from a magnetic field, a charge ' \(q\) ' flows through the coil. If resistance of the coil is ' \(R\) ' then the magnetic flux density is (in \(\mathrm{Wb} / \mathrm{m}^2\) )
- A \(\frac{q^2 R}{2 n A}\)
- B \(\frac{\mathrm{qR}}{\mathrm{nA}}\)
- C \(\frac{\mathrm{qR}^2}{\mathrm{nA}}\)
- D \(\frac{\mathrm{qR}}{2 \mathrm{nA}}\)
Answer & Solution
Correct Answer
(B) \(\frac{\mathrm{qR}}{\mathrm{nA}}\)
Step-by-step Solution
Detailed explanation
\( q = \frac{n \Delta\Phi}{R} \) \( \Delta\Phi = B A \)
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