Three charged particles are in equilibrium under their electrostatic forces only. Then,

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Answer 1

If the particles aren't collinear then there will be an unbalanced force. The particles will lie on a triangle and thus all particles will feel an unbalanced force.
Now we have established that particles are collinear.
If they have same magnitude then either the one on terminal or the one in center will feel an unbalanced force.
If they have the same charge then obviously the particles on the terminal will get repelled. Thus they have different signs.
The equilibrium is unstable as if one charge is given a displacement then the charge configuration will never remain the same after that.

Answer 2

If the particles aren't collinear then there will be an unbalanced force. The particles will lie on a triangle and thus all particles will feel an unbalanced force.
Now we have established that particles are collinear.
If they have same magnitude then either the one on terminal or the one in center will feel an unbalanced force.
If they have the same charge then obviously the particles on the terminal will get repelled. Thus they have different signs.
The equilibrium is unstable as if one charge is given a displacement then the charge configuration will never remain the same after that.

Three charged particles are in equilibrium under their electrostatic forces only. Then,

The particles must be collinear.

All the charge can not have the same magnitude.

All the charges can not have the same sign.

The equilibrium is unstable.

If two charged particles projected with same speed have similar curved paths in a uniform perpendicular electrostatic field, then pick the false statements.

Two charged particles each of mass $5$ g and charge $q = 2 μ C$ are suspended as shown in the figure. The system is taken in a satellite. The force between the charges is:

In comparison to the electrostatic force between two electrons, the electrostatic force between two proton is :

Electrostatic force and gravitational force differ in which respect?

Two particles each of mass $m$ and carrying charge $Q$ are separated by some distance. If they are in equilibrium under mutual gravitational and electrostatic forces, then Q/m (in C/Kg) is of the order of:

Revise with Concepts

Principle of Superposition in Electrostatics

Three charged particles are in equilibrium under their electrostatic forces only. Then,

The particles must be collinear.

All the charge can not have the same magnitude.

All the charges can not have the same sign.

The equilibrium is unstable.

If two charged particles projected with same speed have similar curved paths in a uniform perpendicular electrostatic field, then pick the false statements.

Two charged particles each of mass 5g and charge q=2μC are suspended as shown in the figure. The system is taken in a satellite. The force between the charges is:

In comparison to the electrostatic force between two electrons, the electrostatic force between two proton is :

Electrostatic force and gravitational force differ in which respect?

Two particles each of mass m and carrying charge Q are separated by some distance. If they are in equilibrium under mutual gravitational and electrostatic forces, then Q/m (in C/Kg) is of the order of:

Revise with Concepts

Principle of Superposition in Electrostatics

Two charged particles each of mass $5$ g and charge $q = 2 μ C$ are suspended as shown in the figure. The system is taken in a satellite. The force between the charges is:

Two particles each of mass $m$ and carrying charge $Q$ are separated by some distance. If they are in equilibrium under mutual gravitational and electrostatic forces, then Q/m (in C/Kg) is of the order of: