Electromagnetic Theory-Electromagnetic Induction (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 4 of 4

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Question number: 1

» Electromagnetic Theory » Electromagnetic Induction

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Appeared in Year: 2014

MCQ▾

Question

A superconducting ring carries a steady current in the presence of a magnetic field normal to the plane of the ring. Identify the incorrect statement. (December)

Choices

Choice (4)Response

a.

The flux passing through the superconductor is quantized in unit of

b.

The current density and are related by the equation where is a constant.

c.

The superconductor shows an energy gap, which is proportional to the transition temperature of the superconductor.

d.

The current and the magnetic field in the superconductor are time independent.

Question number: 2

» Electromagnetic Theory » Electromagnetic Induction

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Appeared in Year: 2013

MCQ▾

Question

The electric field of an electromagnetic wave is given by, . The associated magnetic field is (December – 2013)

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 3

» Electromagnetic Theory » Electromagnetic Induction

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Appeared in Year: 2011

MCQ▾

Question

Consider a solenoid of radius R with turns per unit length, in which a time dependent current (where ) flows. The magnitude of the electric field at a perpendicular distance from the axis of symmetry of the solenoid, is – (December)

Choices

Choice (4)Response

a.

b.

0

c.

d.

Question number: 4

» Electromagnetic Theory » Electromagnetic Induction

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Appeared in Year: 2016

MCQ▾

Question

A conducting circular disc of radius and resistivity rotates with an angular velocity in a magnetic field perpendicular to it. voltmeter is connected as shown in the figure below.

A disc of radius r

A Disc of Radius R

Assume its internal resistance to be infinite, the reading on the voltmeter: (December)

Choices

Choice (4)Response

a.

depends on and

b.

depends on and , but not on

c.

is zero because a current flows in the direction of

d.

is zero because the flux through the loop is not changing

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