Home
Class 12
PHYSICS
A rectangular loop PQMN with movable arm...

A rectangular loop PQMN with movable arm PQ of length 10 cm and resistance `2 Omega` is placed in a uniform magnetic field of 0.1 Tesla perpendicular to the plane of the loop as shown in the figure. The resistances of the arms MN, NP and MQ are negligible. Calculate the (i) emf induced in the arm PQ and (ii) current induced in the loop when arm PQ is moved with velocity 20 m/s.

Text Solution

Verified by Experts

(i) induced emf
`e=Blv`
`= 0.1xx10xx10^(-2)xx20V`
`=0.2` volt
(ii) Current in the loop
`i=e/R`
`=(0.2)/(2)=0.1 A`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    OSWAAL PUBLICATION|Exercise TOPIC-1 (Faraday.s Laws & Lenz.s Law) ( Short Answer Type Questions-II)|4 Videos

  • ELECTROMAGNETIC INDUCTION

    OSWAAL PUBLICATION|Exercise TOPIC-1 (Faraday.s Laws & Lenz.s Law) (Long Answer Type Questions)|3 Videos

  • ELECTROMAGNETIC INDUCTION

    OSWAAL PUBLICATION|Exercise TOPIC-2 (Eddy Current, Self & Mutual Inductance) (Numerical Problems)|3 Videos

  • ELECTRIC CHARGES & FIELDS

    OSWAAL PUBLICATION|Exercise (TOPIC -2)Numerical Problems|5 Videos

  • ELECTROMAGNETIC WAVES

    OSWAAL PUBLICATION|Exercise TOPIC-2 : ELECTROMAGNETIC SPECTRUM (SHORT ANSWER TYPE QUESTIONS)|7 Videos

Similar Questions

Explore conceptually related problems

In which of the following cases is no current induced in the loop ?

A square loop of side 10 cm and resistance 0.5 Omega is placed vertically in the east-west plane. A uniform magnetic field of 0.10 T is set up across the plane in the north-east direction. The magnetic field is decreased to zero in 0.70 s at a steady rate. Determine the magnitudes of induced emf and current during this time-interval.

Five resistance of given values are connected together as shown in the figure. The current in the arm BD will be

In a balanced Wheatstone’s network the resistances in the arms Q and S are interchanged. As a result