An aluminium ring B faces an electromagnet A. | vedclass

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

Question

(C) According to Lenz's law,the induced current in the ring $B$ will always oppose the change in magnetic flux linked with it.If the current $I$ in th

Vedclass · Accepted Answer

If $I$ increases,$A$ will repel $B$.

Vedclass · Answer

(C) According to Lenz's law,the induced current in the ring $B$ will always oppose the change in magnetic flux linked with it.If the current $I$ in the electromagnet $A$ increases,the magnetic flux through the ring $B$ increases. To oppose this increase,the ring $B$ will develop a current such that it acts as a magnetic pole similar to the face of the electromagnet facing it,resulting in repulsion.If the current $I$ in the electromagnet $A$ decreases,the magnetic flux through the ring $B$ decreases. To oppose this decrease,the ring $B$ will develop a current such that it acts as an opposite magnetic pole,resulting in attraction.Therefore,if $I$ increases,$A$ will repel $B$.

An aluminium ring $B$ faces an electromagnet $A$. The current $I$ through $A$ can be altered. Which of the following statements is correct?

Similar Questions

Which of the following does not show mutarotation?

$A$ man is watching two trains,one leaving and the other coming with equal speed of $4\,m/s$. If they sound their whistles each of frequency $240\,Hz$,the number of beats per second heard by the man will be equal to (velocity of sound in air $= 320\,m/s$)

Given that $a, b \in \{0, 1, 2, \ldots, 9\}$ with $a+b \neq 0$ and that $\left(a+\frac{b}{10}\right)^x = \left(\frac{a}{10}+\frac{b}{100}\right)^y = 1000$. Then,$\frac{1}{x}-\frac{1}{y}$ is equal to

$\lim _{x \rightarrow \infty}\left(\frac{x+6}{x+1}\right)^{x+4}$ is equal to

$A$ committee of $12$ members is to be formed from $9$ women and $8$ men. The number of committees in which the women are in majority is

Vedclass Test Series

Exam Paper Generator

Online Exam Module