Question

In Fig. 30-33, a circular loop of wire in diameter (seen edge-on) is placed with its normal at an angle with the direction of a uniform magnetic field of magnitude . The loop is then rotated such that rotates in a cone about the field direction at the rate ; angle remains unchanged during the process. What is the emf induced in the loop?

Answer 1

there is no induced emf developed

Step-by-step explanation:

Induced emf developed in the circular loop

ε=
`-(d\phi)/(dt)`

The magnetic flux developed in the coil is

`\phi =BANcos\theta`

`\epsilon= -(d(BANcos\theta))/(dt)`

`\epsilon= -BAN(d(cos\theta))/(dt)`

Here angle made by the loop with the field remaining constant

`(d cos\theta)/(dt)` = 0

`\epsilon= -(d)/(dt) (0)`

hence there is no induced emf developed