HARD
12th Bihar Board
IMPORTANT
Earn 100

Evaluate the capacitance of a parallel plate capacitor having parallel plates of area 6 cm2 placed at a separation of 2 mm. Consider air between plates as a dielectric medium. If the capacitor is connected to 200 V power supply. What will be the charge on each plate?

Important Questions on Electrostatic Potential and Capacitance

HARD
12th Bihar Board
IMPORTANT
Define capacitance of a capacitor. Derive expression for stored energy between plates of parallel plate capacitor. Show that energy-density between plates of the capacitor can be expressed as E=12εoE2, when E= Electric field between plates.
EASY
12th Bihar Board
IMPORTANT
The stored energy, of a capacitor charged to 100 V, is 1 J. Capacitance of the capacitor is-
EASY
12th Bihar Board
IMPORTANT
The electric potential in equatorial position of an electric dipole is-
MEDIUM
12th Bihar Board
IMPORTANT
Two points of +10 μC and -10 μC are placed at a distance 40 cm in the air. Potential energy of the system will be-
HARD
12th Bihar Board
IMPORTANT
Establish the relationship between electric field intensity and electric potential.
EASY
12th Bihar Board
IMPORTANT
The equivalent capacitance of three equal capacitors connected in a series combination is 6 μF. If these three capacitors are connected in parallel, find out the equivalent capacitance of the combination.
HARD
12th Bihar Board
IMPORTANT
What is electric dipole? Find an expression for electric potential at any point due to an electric dipole.