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Q. No.A circular region of radius \(R\) contains a uniform magnetic field \(B \) directed perpendicular to its plane. If the magnetic field is increasing at a constant rate \( \dfrac{dB}{dt},\) what is the magnitude of the induced electric field at a distance \(r\) from the center, where \(r<R \text{?}\)
| 1. | \(\dfrac{dB}{dt}\dfrac{r}{2}\) | 2. | \(\text{zero}\) |
| 3. | \(\dfrac{dB}{dt}\) | 4. | \(\dfrac{dB}{dt}\dfrac{R^2}{2r}\) |
Subtopic: Â Maxwell's Equations |
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