Home
Class 12
PHYSICS
The loop shown moves with a velocity v i...

The loop shown moves with a velocity `v` in a uniform magnetic field of magnitude `B`, directed into the paper. The potential differene between point `P` and `Q` is e. Then

A

`e=1/2BLv`

B

`e=BLv`

C

`P` is positive with respect to `Q`

D

`Q` is positive with respect to `P`

Text Solution

Verified by Experts

The correct Answer is:
A, C
`e=Bvl`, where `i=L/2`
for polarity of this motional emf, we can use right hand rule.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Level 2 Comprehension Based|13 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise SUBJECTIVE TYPE|1 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Level 2 Single Correct|37 Videos

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|97 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY ENGLISH|Exercise Sec C|22 Videos

Similar Questions

Explore conceptually related problems

A rod AB moves with a uniform velocity v in a uniform magnetic field as shown in figure

A glass rod of length l moves with velocity v in a uniform magnetic field B. What is the e.m.f induced in the rod?

A square loop ABCD of edge a moves to the right with a velocity v parallel to AB . There is a uniform magnetic field of magnitude B , direction into the paper, in the region between PQ and RS only. I, II and III are three ppositions of the loop. (i) The emf induced in the loop has magnitude B a v in all three position (II) induced emf is zero in second position (iii) Induced emf is anticlockwise in position II (iv) The induced emf is clockwise in position III

A circular loop of radius r moves with a constant velocity v in a region with uniform magnetic field B . Calculate the potential difference between two points (A, B) , (C, D) , and (E, F) located on the loop.

Two conducting rings P and Q of radius r and 3r move in opposite directions with velocities 2v and v respectively on a conducting surface S. There is a uniform magnetic field of magnitude B perpendicular to the plane of the rings. The potential difference between the highest points of the two rings a

Two conducting rings of radii r and 2r move in apposite directions with velocities 2 upsilon and upsilon respectively on a conducting surface S . There is a uniform magnetic field of magnitude B perpendicular to the plane of the rings. The potential difference between the highest points of the two rings is

The counductor AD moves to the right in a uniform magnetic field directed into the plane of the paper.

A long conducting wire AH is moved over a conducting triangular wire CDE with a constant velocity v in a uniform magnetic field vec(B) directed into the plane of the paper. Resistance per unit length of each wire is rho . Then

A ring of radius R moves with a velocity v in a uniform static magnetic field B as shown in diagram. The emf between P and Q is

A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig __