A loop of irregular shape of conducting wire | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) $1$. The magnetic field is uniform and directed into the plane of the paper (represented by crosses).$2$. As the irregular loop expands to become

Vedclass · Accepted Answer

Anti-clockwise

Vedclass · Answer

(B) $1$. The magnetic field is uniform and directed into the plane of the paper (represented by crosses).$2$. As the irregular loop expands to become a circular shape,the area enclosed by the loop increases.$3$. Since the magnetic field is constant,an increase in the area leads to an increase in the magnetic flux linked with the loop.$4$. According to Lenz's law,the induced current will flow in a direction that opposes this increase in magnetic flux.$5$. To oppose the inward magnetic flux,the induced current must create an outward magnetic field.$6$. By the right-hand thumb rule,an outward magnetic field is produced by an anti-clockwise current.$7$. Therefore,the direction of the induced current is anti-clockwise.

$A$ loop of irregular shape of conducting wire (as shown in the figure) is placed in a uniform magnetic field perpendicular to the plane of the paper. If the loop changes into a circular shape,the direction of the induced current will be:

Similar Questions

The magnetic flux linked with a coil satisfies the relation $\phi = 4t^2 + 6t + 9 \text{ Wb}$, where $t$ is the time in seconds. The emf induced in the coil at $t = 2 \text{ s}$ is (in $\text{ V}$)

In the arrangement shown in the given figure,the current from $A$ to $B$ is increasing in magnitude. The induced current in the loop will

Assertion $(A)$: It is more difficult to push a magnet into a coil with a greater number of turns.
Reason $(R)$: The $emf$ induced in a coil opposes the motion of a magnet when it is moved towards the coil.

Assertion : Faraday's laws are a consequence of the conservation of energy.
Reason : In a purely resistive $AC$ circuit,the current lags behind the $emf$ in phase.

$A$ rectangular loop of wire is coplanar with a long wire carrying current $I$. The loop is pulled to the right as indicated. What are the directions of the induced current in the loop and the magnetic forces on the left and the right sides of the loop?

Vedclass Test Series

Exam Paper Generator

Online Exam Module