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

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Question number: 4

» Electromagnetic Theory » Electromagnetic Induction

Appeared in Year: 2016



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

In figure a disc of radius r connected with voltmeter is shown

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


Choice (4) Response


is zero because a current flows in the direction of


depends on and , but not on


is zero because the flux through the loop is not changing


depends on and

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