Question 171: AC fundamentals

Question

In an $AC$ generator, a coil with $N$ turns, all of the same area $A$ and total resistance $R,$ rotates with frequency $\omega $ in a magnetic field $B.$ The maximum value of $emf$ generated in the coil is

Accepted Answer

$e =  - {{d\phi } \over {dt}} =  - {{d\left( {N\overrightarrow B .\overrightarrow A } \right)} \over {dt}}$
$ =  - N{d \over {dt}}\left( {BA\,\cos \,\omega t} \right) = NBA\omega \sin \,\omega t$
$ \Rightarrow {e_{\max }} = NBA\omega $

Answer

$N.A.B.R.$$\omega $

Answer

$N.A.B$

Answer

$N.A.B.R.$

Answer

$N.A.B.$$\omega $

AC fundamentals

In an AC generator, a coil with N turns, all of the same area A and total resistance R, rotates with frequency \omega in a magnetic field B. The maximum value of emf generated in the coil is

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