- #1
Titan97
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Homework Statement
In the below figure, magnetic field is decreasing at a rate of 1.5T/s in a circular region of radius 2m. EMF developed in the rod will be?
Homework Equations
$$V_{\text{induced}}=-A\frac{\mathrm{d}B}{\mathrm{d}t}$$
The Attempt at a Solution
I tried using induced electric fields. They will be concentric circles and its magnitude is given by $$E=-\frac{r^2}{R^2}\frac{\mathrm{d}B}{\mathrm{d}t}$$ (where ##r## is the radius of the circular region and ##R## is the radius of the circular electric field) I took the components of this electric field along the rod and then tried to used $$V=\int E_rdr$$ But finding ##E_r## is difficult. There will be two points on the rod which cut the circular electric field. What should be my approach?