Question

A conducting loop is placed in a uniform magnetic field with its plane perpendicular to the field. An emf is induced in the loop if
(a) it is translated
(b) it is rotated about its axis
(c) it is rotated about a diameter
(d) it is deformed.

Answer 1

Flux Change Effects Electromotive Force

Explanation:

(c) it is rotated about a diameter

(d) it is deformed

• When interpreted or turned about its pivot, the attractive motion through the circle doesn't change; subsequently, no emf is instigated on the up and up.  

• At the point when turned about a measurement, the attractive motion through the circle changes and emf is incited.

• On disfiguring the circle, the territory of the circle inside the attractive field changes, in this way changing the attractive transition.
• Because of the adjustment in the transition, emf is incited insider savvy.

Answer 2

Answer:

It is rotated about a diameter

Explanation:

The induced emf in a conducting loop is calculated by using the below formula as :  

$\epsilon=-\dfrac{d\phi}{dt}$

Here, $\phi$ is magnetic flux

An emf is induced in the coil if and only the rate of change of magnetic flux occurs in it. If the coil is rotated about a diameter, then its flux will change. Hence, the correct option is (c).  

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Induced emf

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