A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic

A Disc Of Radius 01 M Is Rotating With A Physics Question

A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic field of strength 0.1 tesla. Net induced emf is

Options

(a) 2 π x 10⁻² V
(b) 4 π x 10⁻² V
(c) π x 10⁻² V
(d) 3 π x 10⁻² V

Correct Answer:

π x 10⁻² V

Explanation:

Induced emf = Baʋ

= 0.1 × π (0.1)² × 10

= 0.1 × 0.1π × 10

= π × 10⁻³ × 10

= π × 10⁻² V

Related Questions:

  1. A particle of mass 1mg has the same wavelength as an electron moving with a velocity
  2. The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
  3. A point performs simple harmonic oscillation of period T and the equation of motion
  4. A radioactive element forms its own isotope after 3 consecutive disintegrations.
  5. In the middle of the depletion layer of a reverse-biased P-N junction, the

Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*