HARD
JEE Main / Advanced
IMPORTANT
Earn 100

A point-like charge Q and a dipole with an electric moment pel are separated by a distance that is considerably larger than the arm of the dipole, with the result that the dipole may be considered as being point. The dipole's axis lies along the lines of force of the point charge. Compare the force acting on the dipole in the field of the point charge with that acting on the point charge in the field of the dipole.

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Important Questions on Electrostatics

EASY
JEE Main / Advanced
IMPORTANT

A small uncharged sphere is positioned exactly in the midpoint between two charges whose absolute values are the same but whose signs are opposite. Suppose the sphere is shifted somewhat. Will it remain in the new position or will it move in some direction?

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EASY
JEE Main / Advanced
IMPORTANT

A small uncharged metal sphere is suspended by a long nonconducting string in the region between the vertically positioned plates of a parallel-plate capacitor, closer to one plate than to the other. How will the sphere behave?

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EASY
JEE Main / Advanced
IMPORTANT

Two conducting spheres carry equal charges. The distance between the spheres cannot be considered large in comparison with the diameters of the spheres. In which case will the force of interaction between the spheres be greater (in absolute value): when they carry like charges (Figure) or when they carry unlike charges (Figure)?

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HARD
JEE Main / Advanced
IMPORTANT

A point charge is surrounded by two spherical layers (Figure), with the electric field strength as a function of distance having the form depicted in Figure (on the log-log scale). In what layer (the inner or the outer) is the dielectric constant greater and by what factor?

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EASY
JEE Main / Advanced
IMPORTANT

The region of space between the plates of a parallel-plate capacitor is filled with a liquid dielectric with a dielectric constant ε1. A solid dielectric with a dielectric constant ε2 is immersed in the liquid. The lines of force in the liquid have the shape shown in the figure. Which of the two dielectric constants is greater?

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EASY
JEE Main / Advanced
IMPORTANT

Various potential distributions between two point charges are shown in Figures (the charges are equal in absolute value). Determine the signs of the charges for each case.

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MEDIUM
JEE Main / Advanced
IMPORTANT

Two point charges, Q1 and Q2, are positioned at a certain distance from each other. The curves in the figure represent the distribution of the potential along the straight line connecting the two charges. At which points (1, 2,, and/or 3) is the electric field strength zero? What are the signes of the charges Q1 and Q2 and which of the two is greater in magnitude?

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HARD
JEE Main / Advanced
IMPORTANT
Two equal like charges are positioned at a certain distance from each other. How to the electric field strength and the potential vary along the axis that passes through the midpoint of the distance between the charges at right angles to the line connecting the charges?