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In a coil of resistance 10 Ω, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in Weber is :
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- 8
- 2
- 6
- 4
Correct Option: B
The charge through the coil = area of current-time(i – t) graph
| q = | × 0.1 × 4 = 0.2 C | 2 |
| q = | R |
∵ Change in flux (Δφ) = q × R
| q = 0.2 = | 10 |
Δφ = 2 Weber
