Question

A parallel plate capacitor after charging is kept connected to a battery and the plates are pulled apart with the help of insulating handles. Which of the following quantities will decrease after this would happen ?

• A. charge
• B. capacitance
• C. energy stored
• D. all of these

Answer 1

The correct option is B capacitance

When a parallel plate capacitor after charging is kept connected to a battery and the plates are pulled apart with the help of insulating handles, then the distance between the plates increases. The value of capacitance for parallel plate capacitor is

$C=\frac{A{\epsilon }_0}{d}$

$C\propto \frac{1}{d}$

So, capacitance will decrease.