WBJEE · Physics · Alternating Current
In a closed circuit there is only a coil of inductance \(L\) and resistance \(100 \Omega\). The coil is situated in a uniform magnetic field. All on a sudden, the magnetic flux linked with the circuit changes by \(5 \mathrm{Weber}\). What amount of charge will flow in the circuit as a result?
- A \(500 \mathrm{C}\)
- B \(0.05 \mathrm{C}\)
- C \(20 \mathrm{C}\)
- D Value of \(L\) is to be known to find the charge flown
Answer & Solution
Correct Answer
(B) \(0.05 \mathrm{C}\)
Step-by-step Solution
Detailed explanation
Emf \(=-\frac{\mathrm{d} \phi}{\mathrm{dt}}(\) Faraday's Law \()\) \(\mathrm{i}_{\text {induced }}=\frac{\mathrm{Emf}}{\mathrm{R}}=-\frac{\mathrm{d} \phi}{\mathrm{dt}} \times \frac{1}{\mathrm{R}}\)…
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