Electrostatics Test

Result

Electrostatics Test - 135

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Weekly Quiz Competition

Question 1
4 / -1

The electric field due to a uniformly charged sphere of radius R as a function of the distance from its centre is represented graphically by

A

B

C

D

Solution
Question 2
4 / -1

What physical quantities may X and Y represent? (Y represents the first mentioned quantity)

A
Pressure v/s temperature of a given gas (constant volume)

B
Kinetic energy v/s velocity of a particle

C
Capacitance v/s charge to give a constant potential

D
Potential v/s capacitance to give a constant charge

Solution
Question 3
4 / -1

Between the plates of a parallel plate capacitor a dielectric plate is introduced just to fill the space between the plates. The capacitor is charged and later disconnected from the battery. The dielectric plate is slowly drawn out of the capacitor parallel to the plates. The plot of the potential difference across the plates and the length of the dielectric plate drawn out is

A

B

C

D
Question 4
4 / -1

Figure (a) shows two capacitors connected in series and joined to a battery. The graph in figure (b) shows the variation in potential as one moves from left to right on the branch containing the capacitors, if

A

B

C

D

Solution
Question 5
4 / -1

Equipotential surfaces are shown in figure. Then the electric field strength will be

A
100 Vm^–1 along X-axis

B
100 Vm^–1 along Y-axis

C
200 Vm^–1 at an angle 120° with X-axis

D
50 Vm^–1 at an angle 120° with X-axis

Solution
Question 6
4 / -1

Three identical capacitors are given a charge Q each and they are then allowed to discharge through resistance R₁, R₂ and R₃. Their charges, as a function of time shown in the graph below. The smallest of the three resistance is

A
R₃

B
R₂

C
R₁

D
Cannot be predicted

Solution
Question 7
4 / -1

A condenser of 2µF capacitance is charged steadily from 0 to 5 coulomb. Which of the following graphs correctly represents the variation of potential difference across its plates with respect to the charge on the condenser?

A

B

C

D

Solution
Question 8
4 / -1

Two identical point charges are placed at a separation of d. P is a point on the line joining the charges, at a distance x from any one charge. The field at P is E, E is plotted against x for values of x from close to zero to slightly less than d. Which of the following represents the resulting curve?

A

B

C

D
Question 9
4 / -1

A

B

C

D

Solution
Question 10
4 / -1

A

B

C

D

Solution