1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# A rectangular coil is rotated in a uniform magnetic field about an axis passing through its centre and perpendicular to the direction of the field, then the induced voltage in the coil is directly proportional to the:

A
Number of turns in the coil
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
B
Area of the coil
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
C
Angular speed of the coil
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
D
All of these
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct option is D All of theseAccording to Faraday's law when the magnetic flux linking a circuit changes, an electromotive force is induced in the circuit proportional to the rate of change of the flux linkage.So, when rectangular coil is rotated in a uniform magnetic field about an axis passing through its centre and perpendicular to the direction of the field, then the induced voltage in the coil =dϕdt⇒e.m.f=d(NABsinθ)dt⇒e.m.f= NABωcosθFrom here, we can see that induced voltage is proportional to Number of turns in the coil,Area of the coil and Angular speed of the coil also.Therefore, D is correct option.

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Ampere's Law
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program