Electrostatics Test

Result

Electrostatics Test - 143

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Weekly Quiz Competition

Question 1
4 / -1

A spherical drop of capacitance 1 µF is broken into eight drops of equal radius. Then, the capacitance of each small drop is

A

B

C

D
Question 2
4 / -1

Two capacitors each of capacity 2 µF are connected in parallel. If they are connected to 100 V battery, then energy stored in them is

A
0.02 J

B
0.04 J

C
0.01 J

D
200 J

Solution
Question 3
4 / -1

A dielectric slab is inserted between the plates of an isolated charged capacitor. Which of the following quantities remain unchanged?

A
The charge on the capacitor

B
The stored energy in the capacitor

C
The potential difference between the plates

D
The electric field in the capacitor
Question 4
4 / -1

If eight similar charge drops combine to form a bigger drop, then the ratio of capacitance of bigger drop to that of smaller drop will be

A
2 : 1

B
8 : 1

C
4 : 1

D
16 : 1

Solution
Question 5
4 / -1

A capacitor having capacity of 2µF is charged to 200 V and then the plates of the capacitor are connected to a resistance wire. The heat produced in joule will be

A
2 × 10^-2

B
4 × 10^-2

C
4 × 10⁴

D
4 × 10¹⁰

Solution
Question 6
4 / -1

In this diagram, the PD between A and B is 60 V. The PD across 6µF capacitor is

A
4 V

B
10 V

C
5 V

D
20 V

Solution
Question 7
4 / -1

The equivalent capacitance of the combination shown in figure below is

A
2C

B
C

C
1/2 C

D
None of these
Question 8
4 / -1

Minimum number of 8µF and 250 V capacitors are used to make a combination of 16 µF and 1000 V are

A
4

B
32

C
8

D
3

Solution
Question 9
4 / -1

A capacitor of capacitance 1µF . is filled with two dielectrics of dielectric constants 4 and 6. What is the new capacitance?

A
10 µF

B
5 µF

C
4 µF

D
7 µF

Solution
Question 10
4 / -1

How many 6 µF, 200 V condensers are needed to make a condenser of 18 µF, 600 V?

A
9

B
18

C
3

D
27

Solution