A 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 $t = 0~\text{sec}.$ Which one of the following graphs represents correctly the induced EMF in the coil?

1.		2.
3.		4.

Some magnetic flux is changed from a coil of resistance 10 ohm. As a result an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in webers is

1. 2

2. 4

3. 6

4. None of these

The graph gives the magnitude B(t) 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, greatest first

1. b > (d = e) < (a = c)

2.  b > (d = e) > (a = c)

3. b < d < e < c < a

4. b > (a = c) > (d = e)

Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shown in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v

1. a

2. b

3. c

4. d

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-

1.  2. 

3.  3. 

The current i in an induction coil varies with time t according to the graph shown in figure. Which of the following graphs shows the induced emf (e) in the coil with time

1.              2.
3.               4. 

Switch $S$ of the circuit shown in the figure is closed at $t=0$. If $e$ denotes the induced emf in $L$ and $i$ denotes the current flowing through the circuit at time $t$, then which of the following graphs is correct?
            

1.		2.
3.		4.

A square loop of side 5 cm enters a magnetic field with 1 cms^-1. The front edge enters the magnetic field at t = 0 then which graph best depicts emf

1. 

2. 

3. 

4.

If induction of magnetic field at a point is B and energy density is U, then which of the following graphs is correct?

1. 

2. 

3. 
4.