Electrostatics Test

Result

Electrostatics Test - 125

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Weekly Quiz Competition

Question 1
4 / -1

A parallel plate condenser is filled with two dielectric as shown. Area of each plate is A metre² and the separation is t metre. The dielectric constants are k₁ and k₂ respectively. Its capacitance in farad will be

A

B

C

D

Solution
Question 2
4 / -1

Three condensers each of capacitance 2F are put in series. The resultant capacitance is

A
6F

B

C

D
5F

Solution
Question 3
4 / -1

Two condensers of capacities 1 µF and 2 µF are connected in series and the system is charged to 120 volts. Then the P.D. on 1 µF capacitor (in volts) willbe

A
40

B
60

C
80

D
120

Solution
Question 4
4 / -1

Four condensers are joined as shown in the adjoining figure. The capacity of each is 8µF. The equivalent capacity between the points A and B will be

A
32 µF

B
2 µF

C
8 µF

D
16 µF

Solution
Question 5
4 / -1

The capacities and connection of five capacitors are shown in the adjoining figure. The potential difference between the points A and B is 60 volts. Then the equivalent capacity between A and B and the charge on 5 µF capacitance will be respectively

A
44 µF ; 300µC

B
16 µF ;150µC

C
15µF ; 200µC

D
4µF ; 50µC

Solution
Question 6
4 / -1

Four plates of the same area of cross–section are joined as shown in the figure. The distance between each plate is d. The equivalent capacity across A and B will be

A

B

C

D

Solution
Question 7
4 / -1

In the adjoining figure, four capacitors are shown with their respective capacities and the P.D. applied. The charge and the P.D. across the 4 µF capacitor will be

A
600 µC; 150 volts

B
300 µC; 75 volts

C
800 µC; 200 volts

D
580 µC ; 145 volts

Solution
Question 8
4 / -1

Three identical capacitors are combined differently. For the same voltage to each combination, the one that stores the greatest energy is

A
Two in parallel and the third in series with it

B
Three in series

C
Three in parallel

D
Two in series and third in parallel with it

Solution
Question 9
4 / -1

Two capacitors each of capacity 2µF are connected in parallel. This system is connected in series with a third capacitor of 12µF capacity. The equivalent capacity of the system will be

A
16µF

B
13µF

C
4µF

D
3µF

Solution
Question 10
4 / -1

The resultant capacitance between A and B in the following figure is equal to

A
1µF

B
3µF

C
2µF

D
1.5µF

Solution