Download App

Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
MCQ
A parallel plate capacitor is charged. If the plates are pulled apart:
  • A
    The capacitance increases.
  • B
    The potential difference increases.
  • C
    The total charge increases.
  • D
    The charge and potential difference remain the same.
✓

Answer

  1. The potential difference increases.

Explanation:

Capacitance of a parallel plate capacitor.

$\text{C}=ε0\text{AdC}=ε0\text{Ad}$

A parallel plate capacitor is charged (battery is disconnected) then the plates are pulled apart, the capacitance decreases while the charge remains the same.

$\because$ Potentialdifference = ChargeCapacitance∵Potentialdifference = ChargeCapacitance.

$\therefore$ potential difference increases.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q [1M]" from Electrostatic Potential and Capacitance→Electrostatic Potential and Capacitance — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

If half-life of a substance is 3.8 days and its quantity is 10.38 gm. Then substance quantity remaining left after 19 days will be

(a) 0.151 gm

(b) 0.32 gm

(c) 1.51 gm

(d) 0.16 gm
→
Heavy stable nucle have more neutrons than protons. This is because of the fact that:
→
A bar magnet of magnetic moment $3.0 A- m ^2$ is kept in an uniform magnetic induction of $2 \times 10^{-5} T$. If each pole of the magnet experiences a force of $6 \times 10^{-4} N$, then length of the magnet is :
→
The resistance coils in a resistance box are made of double folded wire so that their.
→
Two non-ideal batteries are connected in parallel. Consider the following statements:
  1. The equivalent emf is smaller than either of the two emfs.
  2. The equivalent internal resistance is smaller than either of the two internal resistances.
  1. Both A and B are correct.
  2. A is correct but B is wrong.
  3. B is correct but A is wrong.
  4. Both A and B are wrong.
→
Identify the wrong statement describing the color code for carbon resistors.
→

If a convex lens of focal  length 80 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power

(a) + 6.5D

(b) – 6.5 D

(c) + 7.5 D

(d) – 0.75 D

→
An electron and a proton are both released from rest 1 meter from a large stationary negative charge, considering only the force from the large stationary negative charge on the proton and electron. Which of the following is true?
→

Assertion  :  A transistor amplifier in common emitter configuration has a low input impedence.

Reason      : The base to emitter region is forward biased.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

→
The size of the nucleus is approximately :
→