Electrostatics Test

Result

Electrostatics Test - 113

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Weekly Quiz Competition

Question 1
4 / -1

Two conducting spheres of radii R₁ and R₂having charges Q₁ and Q₂respectively are connected to eachother. There is

A
No change in the energy of the system

B
An increase in the energy of the system

C
Always a decrease in the energy of the system

D
A decrease in the energy of the system unless Q₁R₂ = C₂R₁

Solution
Question 2
4 / -1

A series combination of n₁ capacitors each of value C₁, is charged by a source of potential difference 4V. When C₂, is charged by a source of potential difference V, it has the same (total) energy stored in it, as the first combination has, The value of C₂, in terms of C₁, is then

A

B

C

D

Solution
Question 3
4 / -1

The energy stored in a condenser of capacity C which has been raised to a potential V is given by

A

B

C
CV

D

Solution
Question 4
4 / -1

Capacitors are used in electrical circuits where appliances need more

A
Current

B
Voltage

C
Watt

D
Resistance
Question 5
4 / -1

If the circumference of a sphere is 2m, then capacitance of sphere in water would be

A
2700 pF

B
2760 pF

C
2780 pF

D
2828 pF

Solution
Question 6
4 / -1

Eight drops of mercury of equal radii possessing equal charges combine to form a big drop. Then the capacitance of bigger drop compared to each individual small drop is

A
8 times

B
4 times

C
2 times

D
32 times

Solution
Question 7
4 / -1

The potential gradient at which the dielectric of a condenser just gets punctured is called

A
Dielectric constant

B
Dielectric strength

C
Dielectric resistance

D
Dielectric number
Question 8
4 / -1

Separation between the plates of a parallel plate capacitor is d and the area of each plate is A. When a slab of material of dielectric constant k and thickness t(t

A

B

C

D

Solution
Question 9
4 / -1

The capacity of parallel plate condenser depends on

A
The type of metal used

B
The thickness of plates

C
The potential applied across the plates

D
The separation between the plates

Solution
Question 10
4 / -1

The energy required to charge a parallel plate condenser of plate separation d and plate area of cross-section A such that the uniform electric fieldbetween the plates is E, is

A

B

C

D

Solution