Electromagnetic Theory-Electromagnetic Induction (CSIR Physical Sciences): Questions 1 - 2 of 3

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Question number: 1

» Electromagnetic Theory » Electromagnetic Induction

Appeared in Year: 2014

MCQ▾

Question

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

Choices

Choice (4) Response

a.

The current density J and B are related by the equation ×J+Λ2B=0, where Λ is a constant.

b.

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

c.

The flux passing through the superconductor is quantized in unit of hce

d.

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

Question number: 2

» Electromagnetic Theory » Electromagnetic Induction

Appeared in Year: 2013

MCQ▾

Question

The electric field of an electromagnetic wave is given by, E=E0cos[π(0.3x+0.4y1000t)]k^ . The associated magnetic field B is (December – 2013)

Choices

Choice (4) Response

a.

102E0cos[π(0.3x+0.4y1000t)](3i^+4j^)

b.

104E0cos[π(0.3x+0.4y1000t)](4i^3j^)

c.

103E0cos[π(0.3x+0.4y1000t)]k^

d.

E0cos[π(0.3x+0.4y1000t)](0.3i^+0.4j^)

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