A) \[\frac{3{{A}_{0}}{{B}_{0}}}{t}\]
B) \[\frac{4{{A}_{0}}{{B}_{0}}}{t}\]
C) \[\frac{3{{B}_{0}}}{{{A}_{0}}t}\]
D) \[\frac{4{{B}_{0}}}{{{A}_{0}}t}\]
Correct Answer: A
Solution :
(a) \[\frac{3{{A}_{0}}{{B}_{0}}}{t}\] Emf induced, \[\varepsilon =\frac{d\phi }{dt}\] \[=\frac{d}{dt}(BA)={{A}_{0}}\frac{dB}{dt}\] \[={{A}_{0}}\left( \frac{4{{B}_{0}}-{{B}_{0}}}{t} \right)=\frac{3{{A}_{0}}{{B}_{0}}}{t}\]You need to login to perform this action.
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