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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