In an AC generator,a coil with N turns,all of | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The magnetic flux $\phi$ linked with the coil at any time $t$ is given by $\phi = N B A \cos(\omega t)$.According to Faraday's law of electromagne

Vedclass · Accepted Answer

$N.A.B.\omega$

Vedclass · Answer

(D) The magnetic flux $\phi$ linked with the coil at any time $t$ is given by $\phi = N B A \cos(\omega t)$.According to Faraday's law of electromagnetic induction,the induced $emf$ is $e = -\frac{d\phi}{dt}$.Substituting the expression for $\phi$,we get $e = -\frac{d}{dt}(N B A \cos(\omega t))$.$e = -N B A \frac{d}{dt}(\cos(\omega t)) = -N B A (-\omega \sin(\omega t))$.$e = N B A \omega \sin(\omega t)$.The maximum value of $emf$ $(e_{\max})$ occurs when $\sin(\omega t) = 1$.Therefore,$e_{\max} = N B A \omega$.

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

Similar Questions

If two sides of a triangle are represented by $3x^2-5xy+2y^2=0$ and its orthocentre is $(2,1)$,then the equation of the third side is

$XOZ$-plane divides the line segment joining the points $(2, 3, 1)$ and $(6, 7, 1)$ in the ratio: (in $: 7$)

Archaea that live in hot springs belong to which group?

The most important ore of tin is:

If $f: R \rightarrow R$ is defined by $f(x) = [x-3] + |x-4|$ for $x \in R$,then $\lim_{x \rightarrow 3^{-}} f(x)$ is equal to

Vedclass Test Series

Exam Paper Generator

Online Exam Module