Home
Class 12
PHYSICS
A parallel plate capacitor with air betw...

A parallel plate capacitor with air between the plates has a capacitance of 10 pF. The capacitance, if the distance bgetween the plates is reduced by half and the space between tehm is filled with a substance of dielectric constant 4 is

A

`80 pF`

B

`96pF`

C

`100 pF`

D

`120 pF`

Text Solution

Verified by Experts

The correct Answer is:
A
Here `C_(1) =(epsi_(0) A)/(d) = 10 pF" "…….(i)`
and `C_(2) = k(epsi_(0)A)/(d//2) = (4xx 2 epsi_(0)A)/(d) " "(because K = 4)`
` = 8 xx 10" "("using (i)")` .
= 80 pF
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Combination Of Capacitors|14 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise Energy Stored In Capacitor|18 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NCERT FINGERTIPS|Exercise The Parallel Plate Capacitor|5 Videos

  • ELECTROMAGNETIC WAVES

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • MAGNETISM AND MATTER

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A parallel plate capacitor with air between the plates has a capacitance of 8 pF. Calculate the capacitace if the distance between the plates is reduced by half and the space between them is filled with a substance of dielectric constant (epsilon_(r)=6)

A parallel plate capacitor with air between the plates has a capacitance of 8 pF. (1 pF = 10^(-12)F) What will be the capacitance if the distance between the plates is reduced by half and the space between them is filled with a substance of dielectric constant 6 ?

A parallel plate capacitor with air inbetween the paltes has a capacitance of 8 pF. The separation between the plates is now reduced by half and the space between them is filled with a medium of dielectric constant 5. Calculate the new value of capacitance.

A parallel plate capacitor with air in between the plates has a capacitance of 8 pF . The separation between the plates is now reduced to half and the space between them is filled with a medium of dielectric constant 5. Calculate the value of capacitance in the second case.

A parallel plate capacitor with air between the plates has a capacitance of 8pF. The separation between the plates is now reduced by half and the space between them is filled with medium of dielectric constant 5. The value of capacitance of a capacitor in the second case is

A parallel plate capacitor with air between the plates has a capacitance 2muF . The capacity of the condenser when the distance between the plates is reduced to half of initial distance is

A parallel plate capacitor with air between the plates has a capacitance C. If the distance between the plates is doubled and the space between the plates is filled with a dielectric of dielectric constant 6, then the capacitance will become.