The following figure shows planar loops of di | vedclass

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

Question

(A) According to Lenz's law,the direction of the induced current is such that it opposes the change in magnetic flux that produced it.$(i)$ The rectan

Vedclass · Accepted Answer

Vedclass · Answer

(A) According to Lenz's law,the direction of the induced current is such that it opposes the change in magnetic flux that produced it.$(i)$ The rectangular loop $abcd$ is moving into the magnetic field region. The magnetic flux through the loop increases. To oppose this increase,the induced current must create a magnetic field directed out of the page. By the right-hand rule,the induced current flows in the counter-clockwise direction,i.e.,along $adcba$.(ii) The triangular loop $abc$ is moving out of the magnetic field region. The magnetic flux through the loop decreases. To oppose this decrease,the induced current must create a magnetic field directed into the page. By the right-hand rule,the induced current flows in the clockwise direction,i.e.,along $abc$.(iii) The irregular loop $abcd$ is moving out of the magnetic field region. The magnetic flux through the loop decreases. To oppose this decrease,the induced current must create a magnetic field directed into the page. By the right-hand rule,the induced current flows in the clockwise direction,i.e.,along $abcda$.

The following figure shows planar loops of different shapes moving into or out of a region of a magnetic field which is directed normal to the plane of the loop,away from the reader. Determine the direction of the induced current in each loop using Lenz's law.

Similar Questions

Two identical circular loops of metal wire are lying on a table without touching each other. $Loop-A$ carries a current which increases with time. In response,the $loop-B$

Magnetic flux linked with the coil in weber is given by the equation $\phi = 5t^2 + 6t + 11$. The e.m.f. induced in the coil in the $5^{\text{th}}$ second will be (in $\text{ V}$)

$A$ coil has $200$ turns and an area of $70 \ cm^2$. The magnetic field perpendicular to the plane of the coil is $0.3 \ Wb/m^2$ and it takes $0.1 \ s$ to rotate through $180^o$. The value of the induced $e.m.f.$ will be ...... $V$.

Consider the experiment shown in the figure.
$(a)$ What would you do to obtain a large deflection of the galvanometer?
$(b)$ How would you demonstrate the presence of an induced current in the absence of a galvanometer?

$A$ system $S$ consists of two coils $A$ and $B$. The coil $A$ carries a steady current $I$. The coil $B$ is suspended nearby as shown in the figure. If the system is heated,so as to raise the temperature of the two coils steadily,then:

Vedclass Test Series

Exam Paper Generator

Online Exam Module