As shown in the figure, two identical conduct | vedclass

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

Question

According to Lenz's law, the induced current creates a magnetic field that opposes the change in magnetic flux.
In figure (a), the magnetic field

Vedclass · Accepted Answer

Anticlockwise, Anticlockwise

Vedclass · Answer

According to Lenz's law, the induced current creates a magnetic field that opposes the change in magnetic flux.
In figure (a), the magnetic field is directed into the page $(	imes)$ and is increasing. To oppose this increase, the induced current must create a magnetic field directed out of the page $(\bullet)$. According to the right-hand rule, an outward magnetic field corresponds to an anticlockwise current.
In figure (b), the magnetic field is directed out of the page $(\bullet)$ and is decreasing. To oppose this decrease, the induced current must create a magnetic field into the page $(	imes)$. According to the right-hand rule, this corresponds to a clockwise current.
Therefore, the direction of current in ring (a) is anticlockwise and in ring (b) is clockwise.

Similar Questions

$A$ coil having effective area '$A$' is held with its plane normal to a magnetic field of induction '$B$'. The magnetic induction is quickly reduced to $25\%$ of its initial value in $1 \text{ s}$. The e.m.f. induced in the coil (in volt) will be

Predict the direction of induced current in the situations described by the following figures.

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 $B$:

Assertion $(A)$: It is more difficult to move a magnet into a coil with more loops.
Reason $(R)$: This is because the emf induced in each current loop resists the motion of the magnet.

The magnetic field of an electromagnetic wave in a certain region obeys the relation $B = 10^{-12} \sin(5 \times 10^6 t) \text{ T}$,where $t$ is the time. Then,the induced emf in a coil of $300$ turns and area $20 \text{ cm}^2$,oriented perpendicular to the field,is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module