Physics Test 75

Result

Physics Test 75

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Weekly Quiz Competition

Question 1
4 / -1

In isolated parallel plate capacitor of capacitance C, the plates have charges Q₁ and Q₂. The potential difference between the plates is :

A

B

C

D

Solution
Question 2
4 / -1

C, V, U and Q are capacitance, potential difference energy stored and charge of parallel plate capacitor respectively. The quantities that increases when a dielectric slab is introduced between the plates without disconnecting the battery are :

A
C, V, Q

B
C, U, Q

C
V, U, Q

D
C, V, U

Solution

As dielectric slab is introduced C is increased V will remain same
Question 3
4 / -1

Two conducting sphere of radii r₁ and r₂ having charges Q₁ and Q₂ respectively are connected each other. There is :

A
No change in the energy of system

B
An increase in energy of system

C
Always a decrease in the energy of system

D
Can't say anything

Solution
Question 4
4 / -1

In the figure shown, the capacitor of the capacity C is 2μF. The current in 2Ω resistor is :

A
9A

B
0.9A

C

D

Solution
Question 5
4 / -1

The capacitance of system is C. If key is closed the total energy loss is equal to :

A

B

C

D
None of these
Question 6
4 / -1

A condenser of capacity C₁ is charged to a potential V₀. The electrostatic energy stored in it is U₀. It is connected to another uncharged capacitor C₂ in parallel. The energy dissipated in the process is :

A

B

C

D

Solution
Question 7
4 / -1

Potential of the point P is :

A
5V

B
6V

C
8V

D
9V

Solution
Question 8
4 / -1

Equivalent capacitance between A and B in the given diagram is :

A
6/5 C

B
2C

C
9/7 C

D
11/5 C

Solution
Question 9
4 / -1

If the two plates of the charged capacitor are connected by a wire, than

A
Potential will become infinite

B
Charge will become infinite

C
Capacitor will get discharged

D
Charge will become double that of earlier one

Solution

Potential difference will become zero. Hence
q ⇒ CV
q ⇒ 0
Question 10
4 / -1

The equivalent capacitance between A and B of the combination shown in the figure is :

A
1 µF

B
3 µF

C
6/11 µF

D
6 µF

Solution