The magnetic flux through a circuit of resist | vedclass

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

Question

(B) According to Faraday's law of electromagnetic induction,the induced electromotive force $(EMF)$ is given by $\varepsilon = \frac{\Delta \phi}{\Del

Vedclass · Accepted Answer

$\frac{\Delta \phi}{R}$

Vedclass · Answer

(B) According to Faraday's law of electromagnetic induction,the induced electromotive force $(EMF)$ is given by $\varepsilon = \frac{\Delta \phi}{\Delta t}$.Since the circuit has resistance $R$,the induced current $I$ is given by $I = \frac{\varepsilon}{R} = \frac{\Delta \phi}{R \Delta t}$.The total charge $Q$ that passes through the circuit is the product of current and time: $Q = I 	imes \Delta t$.Substituting the expression for $I$,we get $Q = \left( \frac{\Delta \phi}{R \Delta t} ight) 	imes \Delta t$.Therefore,the total quantity of electric charge is $Q = \frac{\Delta \phi}{R}$.

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

Similar Questions

$A$ coil with an area of $500 \ cm^2$ and $1000$ turns is placed in a magnetic field of $2 \times 10^{-5} \ Wb/m^2$ perpendicular to its plane. If the coil is rotated by $180^o$ in $0.2 \ s$,the induced $emf$ in $milli-volts$ is:

$A$ coil having $n$ turns and resistance $R \ \Omega$ is connected with a galvanometer of resistance $4 R \ \Omega$. This combination is moved in time $t$ seconds from a magnetic flux $\phi_1$ Weber to $\phi_2$ Weber. The induced current in the circuit is

The magnetic flux linked with a coil varies as $\phi = 3t^{2} + 4t + 9$. The magnitude of the emf induced at $t = 2 \text{ s}$ is: (in $\text{ V}$)

$A$ and $B$ are two metallic rings placed at opposite sides of an infinitely long straight conducting wire as shown. If current in the wire is slowly decreased,the direction of induced current will be

Consider a metal ring kept on top of a fixed solenoid (say on a cardboard) as per the figure. The center of the ring coincides with the axis of the solenoid. If the current is suddenly switched on,the metal ring jumps up. Explain.

Vedclass Test Series

Exam Paper Generator

Online Exam Module