The north and south poles of two identical magnets approach a coil, containing a condenser, with equal speeds from opposite sides. Then

 

The graph shows the variation in magnetic flux $\varphi \left(t\right)$ with time through a coil. Which of the statements given below is not correct?

A horizontal loop $abcd$ is moved across the pole pieces of a magnet as shown in the figure, with a constant speed $v$. When the edge $ab$ of the loop enters the pole pieces at time $t=0$ sec, which one of the following graphs represents correctly the induced emf in the coil?

Two circular coils $A$ and $B$ are facing each other as shown in figure. The current $i$ through $A$ can be altered. Choose the correct statement.

The graph gives the magnitude $B\left(t\right)$ of a uniform magnetic field that exists throughout a conducting loop, perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude of the emf induced in the loop.

An isosceles rigid triangle $ABC$ of sides $6 \mathrm{m}, 5 \mathrm{m}$ and $5 \mathrm{m}$ is lying in a uniform magnetic field $\overrightarrow{B}=1 \mathrm{T}$, directed perpendicular to plane of the loop as shown in the figure. The loop is pulled out at constant velocity, $v=1 \mathrm{m} {\sec }^{-1}$ as shown in the figure. Initially the vertex $A$ is at distance $1 \mathrm{m}$ from boundary of magnetic field. Draw the graph of induced emf in the loop as a function of time.

The current $i$ in an induction coil varies with time $t$ according to the graph shown:

Which of the following graphs show the induced emf $\left(e\right)$ in the coil with time?

A rectangular loop is being pulled at a constant speed $v$ through a region of certain thickness $d$, in which a uniform magnetic field $B$ is set up.

The graph between position $x$ of the right hand edge of the loop and the induced emf $E$ will be,

A flexible wire bent in the form of a circle is placed in a uniform magnetic field perpendicular to the plane of the coil. The radius of the coil changes as shown in the figure:

The graph of induced emf in the coil is represented by,