Electromagnetic Theory [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 5 - 8 of 88

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Question 5

Appeared in Year: 2014

Write in Short

Short Answer▾

The value of the magnetic field required to maintain non – relativistic protons of energy in a circular orbit of radius is .

(Given: )

Question 6

Electromagnetic Theory

Appeared in Year: 2015

Question

MCQ▾

A long solenoid is embedded in a conducting medium and is insulated from the medium. If the current through the solenoid is increased at a constant rate, the induced current in the medium as a function of the radial distance from the axis of the solenoid is proportional to –

Choices

Choice (4)Response

a.

inside the solenoid and outside

b.

inside the solenoid and outside

c.

inside the solenoid and outside

d.

inside the solenoid and outside

Question 7

Electromagnetic Theory

Appeared in Year: 2016

Question

MCQ▾

Which of the following magnetic vector potentials gives rise to a uniform magnetic field ?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 8

Appeared in Year: 2016

Write in Short

Short Answer▾

The magnitude of the magnetic dipole moment associate with a square shaped loop carrying a steady current is . If this loop is changed to a circular shape with the same current passing it, the magnetic moment becomes . The value of is ________.

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