Electromagnetic Theory (GATE Physics): Questions 5 - 8 of 36

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Question number: 5

» Electromagnetic Theory » Solutions of Electrostatic and Magnetostatic Problems

Appeared in Year: 2014

Short Answer Question▾

Write in Short

The value of the magnetic field required to maintain non – relativistic protons of energy 1MeV in a circular orbit of radius 100mm is _______Tesla .

(Given: mp=1.67×1027kg,e=1.6×1019C )

Question number: 6

» Electromagnetic Theory » Faraday's Law

Appeared in Year: 2015

MCQ▾

Question

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 r from the axis of the solenoid is proportional to –

Choices

Choice (4) Response

a.

r inside the solenoid and 1r2 outside

b.

r inside the solenoid and 1r outside

c.

r2 inside the solenoid and 1r outside

d.

r2 inside the solenoid and 1r2 outside

Question number: 7

» Electromagnetic Theory » Scalar and Vector Potentials

Appeared in Year: 2016

MCQ▾

Question

Which of the following magnetic vector potentials gives rise to a uniform magnetic field B0k^ ?

Choices

Choice (4) Response

a.

B0zk^

b.

B0xj^

c.

B02(yi^+xj^)

d.

B02(yi^+xj^)

Question number: 8

» Electromagnetic Theory » Solutions of Electrostatic and Magnetostatic Problems

Appeared in Year: 2016

Short Answer Question▾

Write in Short

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

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