Question

show work please

a square col with a loops of wire, een of which is axis with a sped af 12 revolutions per seconda If the sadnetic field is horizontal withra strength 35 mT. What is the pears Em F generated?

Answer 1

Induced emf is defined as rate of change in flux in the loop,

Flux=Magnetic field$\times$Area$\times$cos$\theta$

$\theta$=Angle between them

Let us consider at any instant t angle between magnetic field and area vector is $\theta$

$\theta$= wt

Net Flux through the loop =NBA

e=emf

A=Area of single loop

N=Number of turns

B=Magnetic field

w=angular velocity of loop

R=Radius of loop= Length of each wire/2$\pi$= 0.24/2$\pi$= 0.0382 m

t=time

e=NBAcos(wt)

Peak value of emf= NBA= 81*35*10^-3*$\pi$R²= 81*35*10^-3*$\pi$(0.0382)²= 12.996*10^-3 V

e$\approx$13*10^-3 V