Download App

STD 12 -6. Electromagnetic induction — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 -6. Electromagnetic induction4 Marks
MCQ
Two infinitely long conducting parallel rails are connected through a capacitor $C$ as shown in the figure. $A$ conductor of length $l$ is moved with constant speed $v_0$.Which of the following graph truly depicts the variation of current through the conductor with time ?
  • A

  • B

  • ✓

  • D

✓

Answer

Correct option: C.

c
By Faraday's Law of induction,

$\varepsilon=-\frac{d \phi}{d t}$

$=-B l \frac{d x}{d t}=-B l v_{0}$

This emf should induce the movement of charges creating a current. But due to the attached capacitor, all charges are conserved.

Thus $I=\frac{d q}{d t}=0$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A rectangular block is heated from $0^{\circ} C$ to $100^{\circ} C$. The percentage increase in its length is $0.10 \%$. What will be the percentage increase in its volume?
→
An object is placed at the focus of concave lens having focal length $f$. What is the magnification and distance of the image from the optical centre of the lens?
→
The total energy of the body executing $S.H.M.$ is $E$. Then the kinetic energy when the displacement is half of the amplitude, is
→
What is the nature of change in internal energy in the following three thermodynamical processes shown in figure
→
The ends of stretched wire of length $L$ are fixed at $x\, = 0$ and $x \,= L$. In one experiment, the displacement of the wire is ${y_1} = A\sin\, \left( {\pi x/L} \right)\sin \,\omega t$ and energy is $E_1$. and in another experiment its displacement is ${y_2} = A\sin \,\left( {2\pi x/L} \right)\sin 2\omega t$ and energy is $E_2$, Then
→
The diagram of a logic circuit is given below. The output $F$ of the circuit is represented by
→
A particle is moving along a straight line with constant acceleration. At the end of tenth  second its velocity becomes $20\, m/s$ and in tenth second it travels a distance of $10\, m$.  Then the acceleration of the particle will be........$m/s^2$
→
Select the correct choice(s) :
→
A ball is thrown vertically upward with an initial velocity of $150\,m / s$. The ratio of velocity after $3\,s$ and $5\,s$ is $\frac{x+1}{x}$. The value of $x$ is $...........$ Take $\left(g=10\,m / s ^2\right)$
→
A vibratory motion is represented by $x = 2A\,\cos \omega t + A\,\cos \,\left( {\omega t + \frac{\pi }{2}} \right) + A\,\cos \,\left( {\omega t + \pi } \right)$ $ + \frac{A}{2}\,\cos \left( {\omega t + \frac{{3\pi }}{2}} \right)$. The resultant amplitude of the motion is
→