MEDIUM
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IMPORTANT
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Consider a half circular disc of radius having uniform surface charge density A disc of radius is removed from the half disc as shown in figure. Find potential at (in )(centre of complete disc)

(a)
(b)
(c)
(d)

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Important Questions on Electrostatic Potential and Capacitance
HARD
JEE Main/Advance
IMPORTANT
In the given circuit, the switch was initially open. If the switch is closed now, then amount of charge flown through the switch is


HARD
JEE Main/Advance
IMPORTANT
A cylindrical air capacitor of length inner radius and outer radius is connected to a battery of emf as shown in figure. A particle of charge and mass is released from rest from inner surface of capacitor. The speed of particle when it reaches to the mid-point of plates, is


MEDIUM
JEE Main/Advance
IMPORTANT
Three identical conducting plates are arranged as shown in figure and they are given charges as indicated. When switch is closed, the amount of charge flown through the switch is


HARD
JEE Main/Advance
IMPORTANT
A charged particle having charge and mass accelerated by a potential difference enters inside a parallel plate capacitor (parallel to length of plates) at midpoint of its separation between plates at Potential difference across capacitor varies with time as, , where is constant and is separation between plates. Angle of deviation as it comes out of plates, is Value of , will be

MEDIUM
JEE Main/Advance
IMPORTANT
Six capacitors each of capacitance is connected as shown in the figure and initially all the capacitors are uncharged. Now a battery of is connected. How much charge will flow through the battery if the switch is on?

HARD
JEE Main/Advance
IMPORTANT
There are two conducting spheres of radius and carrying equal and opposite charges. They are placed at a separation The capacitance of the system is

MEDIUM
JEE Main/Advance
IMPORTANT
Find the equivalent capacitance of the infinite ladder shown in the figure, between the points and .

HARD
JEE Main/Advance
IMPORTANT
The figure given below shows a system of three concentric metal shells , and with radii , and respectively. Shell is earthed and the shell is given a charge . Now, if shell is connected to the shell then the final charge on the shell is equal to
