Question

The expression for the induced emf generated in a coil as a result of change in magnetic flux linked with it

A
B
C
e=ddt(A.B)
D
e=ddt(A×B)

Solution

The correct option is A $$\displaystyle e = \frac{d}{dt} (\vec A . \vec B)$$$$emf = \dfrac{d flux}{dt}$$$$= \dfrac{ d ( \vec A .\vec B)}{dt}$$Physics

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