MEDIUM
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IMPORTANT
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Given below are two statements
Statement I : An electric dipole is placed at the centre of a hollow sphere. The flux of electric field through the sphere is zero, but the electric field is not zero anywhere in the sphere.

Statement II : If R is the radius of a solid metallic sphere and Q be the total charge on it. The electric field at any point on the spherical surface of radius r<R is zero but the electric flux passing through this closed spherical surface of radius r is not

In the light of the above statements, choose the correct answer from the options given below:

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Important Questions on Electrostatics

HARD
JEE Main
IMPORTANT
27 similar drops of mercury are maintained at 10 V each. All these spherical drops combine into a single big drop. The potential energy of the bigger drop is ___________ times that of a smaller drop.
HARD
JEE Main
IMPORTANT

A charged particle (mass m and charge q) moves along X axis with velocity V0. When it passes through the origin it enters a region having uniform electric field E=-Ej^ which extends upto x=d. Equation of path of electron in the region x>d is:

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HARD
JEE Main
IMPORTANT
5 μF capacitor is charged fully by a 220 V supply. It is then disconnected from the supply and is connected in series to another uncharged 2.5 μF capacitor. If the energy change during the charge redistribution is X100 J then value of X to the nearest integer is :
MEDIUM
JEE Main
IMPORTANT
10 μF capacitor is fully charged to a potential difference of 50 V After removing the source voltage it is connected to an uncharged capacitor in parallel. Now the potential difference across them becomes 20 V. The capacitance of the second capacitor is :
MEDIUM
JEE Main
IMPORTANT

A small point mass carrying some positive charge on it, is released from the edge of a table. There is a uniform electric field in this region in the horizontal direction. Which of the following options then correctly describe the trajectory of the mass ? (Curves are drawn schematically and are not to scale)

EASY
JEE Main
IMPORTANT

A charge Q is distributed over two concentric conducting thin spherical shells radii r and R R>r. If the surface charge densities on the two shells are equal, the electric potential at the common centre is : 

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HARD
JEE Main
IMPORTANT
Two isolated conducting spheres S1 and S2 of radius 23R and 13R have 12 μC and -3 μC charges, respectively, and are at a large distance from each other, They are now connected by a conducting wire. A long time after this is done the charges on S1 and S2 are respectively:
MEDIUM
JEE Main
IMPORTANT

In the circuit shown in the figure, the total charge is 750 μC and the voltage across capacitor C2 is 20 V. Then the charge on capacitor C2 is :

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