A conducting loop is placed in a uniform magn | vedclass

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

Question

(C) The induced $emf$ in a loop is given by Faraday's law: $emf = -\frac{d\phi}{dt}$,where $\phi = B A \cos	heta$.$(a)$ If the loop is translated in

Vedclass · Accepted Answer

$c, d$

Vedclass · Answer

(C) The induced $emf$ in a loop is given by Faraday's law: $emf = -\frac{d\phi}{dt}$,where $\phi = B A \cos	heta$.$(a)$ If the loop is translated in a uniform magnetic field,the magnetic flux $\phi$ remains constant,so no $emf$ is induced.$(b)$ If the loop is rotated about its axis,the angle $	heta$ between the area vector and the magnetic field remains constant,so $\phi$ does not change. No $emf$ is induced.$(c)$ If the loop is rotated about a diameter,the angle $	heta$ changes with time,causing the flux $\phi$ to change. Thus,an $emf$ is induced.$(d)$ If the loop is deformed,its area $A$ changes,which causes the flux $\phi$ to change. Thus,an $emf$ is induced.Therefore,an $emf$ is induced in cases $(c)$ and $(d)$.

$A$ conducting loop is placed in a uniform magnetic field with its plane perpendicular to the field. An $emf$ is induced in the loop if:
$(a)$ It is translated (inside the field)
$(b)$ It is rotated about its axis
$(c)$ It is rotated about a diameter
$(d)$ It is deformed

Similar Questions

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.

The magnetic flux through a circuit of resistance $R$ changes by an amount $\Delta \phi$ in time $\Delta t$. Then the total quantity of electric charge $Q$ which is passing during this time through any point of the circuit is given by:

$A$ conducting ring of certain resistance is falling towards a current-carrying straight long conductor. The ring and conductor are in the same plane. Then

Consider a magnet surrounded by a wire loop with an on/off switch $S$ as shown in the figure. If the switch is thrown from the off position (open circuit) to the on position (closed circuit), will a current flow in the circuit? Explain.

The coil of area $0.1 \ m^2$ has $500$ turns. After placing the coil in a magnetic field of strength $4 \times 10^{-4} \ Wb/m^2$,if it is rotated through $90^o$ in $0.1 \ s$,the average emf induced in the coil is......$V$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$ conducting loop is placed in a uniform magnetic field with its plane perpendicular to the field. An $emf$ is induced in the loop if:$(a)$ It is translated (inside the field)$(b)$ It is rotated about its axis$(c)$ It is rotated about a diameter$(d)$ It is deformed