The figure shows four wire loops, with edge lengths of either l or 2l. All four loops will move through a region of uniform magnetic field g at the same constant velocity. In
which loop the emf induced is maximum :

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

III

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A I
$E = v B l$
where $B$ =magnetic field which is same for all 4 loops
$v$ =speed which is also same
$l$ =length of side entering or leaving the loop . When whole loop has entered the field, no further change in flux hence then no emf will be induced. emf is induced when entering or leaving the field region now,

Since, length of side entering field is same for $I$ and $I I$ and greater than $I I I$ and $I V$ , same and maximum emf will be induced in both $I$ and $I I$ .

Suggest Corrections

Similar questions

Q. The figure shows four wire loops, with edge lengths of either

l o r 2 l

. All four loops will move through a region of uniform magnetic field

\to B

(directed outwards from the plane of paper and perpendicular to it) at the same constant velocity. In which loop(s) the emf induced is maximum

Q. The figure shows four wire loops, with the lengths of either

L

2 L .

All four loops will move through a region of uniform magnetic field of intensity

B

outward from the plane of paper. The loops will move at the same constant velocity. Rank the four loops according to the increasing magnitude of the emf induced as they move through the field,

The figure shows four wire loops, with edge lengths of either $L o r 2 L$ . All four loops will move through a region of uniform magnetic field $\to B$ (directed out of the page) at the same constant velocity. Rank the four loops according to the maximum magnitude of the e.m.f. $(e)$ induced as they enter the field.