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NEET 2006
Exam
NEET
Year
2006
Subject
Physics
Chapter
Capacitance

NEET 2006 · Physics · Capacitance

A parallel plate air capacitor is charged to a potential difference...

A parallel plate air capacitor is charged to a potential difference of VV volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates:

Options

  1. Aincreases
  2. Bdecreases
  3. Cdoes not change
  4. Dbecomes zero

Correct answer

A. increases

Step-by-step solution

According to the question ϕ=\phi= Const and decrease in CC means increase in VV.C=tofd Capacitance = Charge  Potential difference ⇒ Potential difference = Charge  Capacitance . \begin{aligned}& C=\frac{t o f}{d}\\ & \text{ Capacitance }=\frac{\text{ Charge }}{\text{ Potential difference }}\\ & \Rightarrow \text{ Potential difference }\\ & =\frac{\text{ Charge }}{\text{ Capacitance }} \text{. }\\ & \end{aligned}
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