EASY
12th Nagaland Board
IMPORTANT
Earn 100

Three capacitors are connected as shown in the following figure. Calculate the resultant capacitance. If the combination is connected across a DC battery, find the total charge drawn by the arrangement.



Important Questions on Electrostatic Potential and Capacitance
HARD
12th Nagaland Board
IMPORTANT
Prove that total electrostatic potential energy stored in a capacitor is . Hence, derive an expression for the energy density of an electric field.

EASY
12th Nagaland Board
IMPORTANT
Derive an expression for electric potential due to a point charge. How do electric potential vary with distance for a point charge?

EASY
12th Nagaland Board
IMPORTANT
A parallel plate capacitor with air between the plates has a capacitance of . What will be the capacitance of the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant ?

EASY
12th Nagaland Board
IMPORTANT
A capacitor is charged by a supply. It is then disconnected from the supply and is connected to another uncharged capacitor. How much electrostatic energy is lost in the process?
