Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • I have a doubt, kindly clarify. A small circular loop of wire of radius a is located at the centre of a much larger circular wire loop of radius b. The two loops are in the same plane. The outer loop of radius b carries an alternating current I=Io co

 A small circular loop of wire of radius a is located at the centre of a much larger circular wire loop of radius b.  The two loops are in the same plane.  The outer loop of radius b carries an alternating current I=Io cos (ωt).  The emf induced in the smaller inner loop is nearly :

 

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

Answers (1)

best_answer

 

As we learnt in

IF Magnetic field (B) — change -

\varepsilon = -NA\cos \Theta \left ( \frac{dB}{dt} \right )

- Magnetic field produced by outer loop = \frac{\mu _{o}I}{}{2R} = \frac{\mu _{o}I_{o}cos\omega t}{2b}

\phi = B.A = (\frac{\mu _{o}I_{o}coswt}{2b}) \pi a^{2}

\xi = \left | \frac{-dL}{dt} \right | = \frac{\mu _{o}I_{o}\pi }{2b} a^{2} . \omega\:sin \omega t


Option 1)

This option is correct.

Option 2)

This option is incorrect.

Option 3)

This option is incorrect.

Option 4)

This option is incorrect.

Posted by

Aadil

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

BTech Admission 2025 Live: JEE Mains, SRMJEEE, MET registrations underway; MHT CET syllabus updates
anam-khan

Centre issues coaching guidelines, prohibits centres from using false claims like '100% selection'
anam-khan

BTech Admissions 2025 Live: JEE Mains, SRMJEE, VITEEE dates out; AEEE, MET registrations underway

Latest Question