There is a uniform magnetic field directed pe | vedclass

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

Question

(A) For a given perimeter,the area of a circle is the maximum among all plane shapes. As the irregular loop changes into a circular loop,its area $A$

Vedclass · Accepted Answer

current is induced in the loop in the anticlockwise direction

Vedclass · Answer

(A) For a given perimeter,the area of a circle is the maximum among all plane shapes. As the irregular loop changes into a circular loop,its area $A$ increases.Since the magnetic field $B$ is uniform and directed into the plane,the magnetic flux $\phi = B \cdot A$ increases.According to Lenz's law,the induced current will create a magnetic field to oppose this increase in flux.Therefore,the induced magnetic field must be directed out of the plane.Using the right-hand thumb rule,a magnetic field directed out of the plane corresponds to an anticlockwise induced current.

There is a uniform magnetic field directed perpendicular and into the plane of the paper. An irregular shaped conducting loop is slowly changing into a circular loop in the plane of the paper. Then

Similar Questions

$A$ conducting loop is kept perpendicularly in an increasing magnetic field,as shown in the figure. The direction of the induced current in the loop will be:

The magnetic flux linked with a coil (in $Wb$) is given by the equation $\phi = 5t^2 + 3t + 16$. The magnitude of induced emf in the coil at the fourth second will be (in $V$):

Two identical circular coils $A$ and $B$ are kept on a horizontal tube side by side without touching each other. If the current in the coil $A$ increases with time,in response,the coil $B$

Assertion: An $emf$ $\vec{E}$ is induced in a closed loop where magnetic flux is varied. The induced $\vec{E}$ is not a conservative field.
Reason: The line integral $\oint \vec{E} \cdot d\vec{l}$ around the closed loop is nonzero.

As shown in the figure,a bar magnet is moving towards a stationary coil with a constant speed $v$. The direction of the induced current in the coil as observed by the observer on the $R$.$H$.$S$. is . . . . . . .

Vedclass Test Series

Exam Paper Generator

Online Exam Module