A bar magnet is moved along the axis of a cop | vedclass

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

Question

(D) According to Lenz's law,the induced current in the ring will create a magnetic field that opposes the change in magnetic flux.When viewed from the

Vedclass · Accepted Answer

Both $(B)$ and $(C)$.

Vedclass · Answer

(D) According to Lenz's law,the induced current in the ring will create a magnetic field that opposes the change in magnetic flux.When viewed from the side of the magnet,an anticlockwise current in the ring corresponds to a magnetic North pole $(N)$ facing the magnet.Case $1$: If the North pole of the magnet faces the ring and moves towards it,the ring will induce a North pole to repel it,resulting in an anticlockwise current.Case $2$: If the South pole of the magnet faces the ring and moves away from it,the ring will induce a North pole to attract it,also resulting in an anticlockwise current.Therefore,both $(B)$ and $(C)$ are correct.

$A$ bar magnet is moved along the axis of a copper ring placed far away from the magnet. Looking from the side of the magnet,an anticlockwise current is found to be induced in the ring. Which of the following may be true?

Similar Questions

The magnetic flux through a coil perpendicular to its plane and directed into the paper is varying according to the relation $\phi = (2t^2 + 4t + 6) \, mWb$. The $emf$ induced in the loop at $t = 4 \, s$ is ....... $V$.

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

$A$ coil having effective area $A$ is held with its plane normal to a magnetic field of induction $B$. The magnetic induction is quickly reduced by $25 \%$ of its initial value in $2 \ s$. The e.m.f. induced across the coil will be:

$A$ magnet is brought towards a coil $(i)$ speedily and $(ii)$ slowly. What will be the induced $e.m.f.$ and induced charge, respectively?

$A$ coil is placed perpendicular to a magnetic field of $5000 \,T$. When the field is changed to $3000 \,T$ in $2 \,s$, an induced emf of $22 \,V$ is produced in the coil. If the diameter of the coil is $0.02 \,m$, then the number of turns in the coil is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module