First slide
Magnetic Flux
Question

In a coil of resistance of 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

 

Easy
Solution

q = area under the graph

q=12×0.1×4=0.2dq=dϕRϕ=qR

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