Electromagnetic Theory-Faraday's Law (GATE Physics): Questions 1 - 2 of 2

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Question number: 1

» 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: 2

» Electromagnetic Theory » Faraday's Law

Appeared in Year: 2009

MCQ▾

Question

A conducting loop L of surface area S is moving with a velocity v in a magnetic field B(r,t)=B0t2 , B0 is a positive constant of suitable dimensions. The emf induced, Vemf , in the loop is given by,

Choices

Choice (4) Response

a.

L(v×B)dL

b.

SBtdSL(v×B)dL

c.

SBtdS

d.

SBtdS+L(v×B)dL

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