Electric Charge...

A positive charged particle is kept on the plane surface. There are two points X and Y lies on the plane surface as shown above. If the point Y is three times as far away from Q as point X. What is the ratio of the electric force that would act on a small charge placed at point Y compared to the charge placed at point X?

On decreasing the charge on both particles by a factor of $$3$$ while leaving all other factors the same will:

An electron and a proton are both released from rest 1 meter from a large stationary negative charge, considering only the force from the large stationary negative charge on the proton and electron. Which of the following is true?

A particle of charge +2q exerts a force F on a particle of charge -q . What is the force exerted by the particle of charge -q on the particle of charge +2q?

Two charged particle of charge $$+2q$$ & $$-q$$ are kept at some distance .A particle of charge $$+2q$$ exerts a force $$F$$ on a particle of charge $$-q$$. Find out the force exerted by the particle of charge $$-q$$ on the particle of charge $$+2q$$?

An electron and a proton are both released from rest 1 meter from a large stationary negative charge, considering only the force from the large stationary negative charge on the proton and electron.
Which of the following is true?

Two charged particles exert a force of magnitude F on one another. If the distance between them is doubled and the charge of one of the particles is doubled, what is the new force acting between them?

Two charged particles exert a force of magnitude $$F$$ on one another. If the distance between them is doubled and the charge of one of the particles becomes four times, Find out the new force acting between them?

Consider two charges located on a line in a region far from other charges. Charge 1 is located at position x = 0 m on the line, and Charge 2 is located at position x = 12 m on the line.
A proton placed at any point on the line between the two charges will experience a net force due to the two charges. The net force acting on the proton is shown as a function of position in the graph, where positive values of force represent rightward force.
What is the sign of each charge, and which charge is stronger?

A charge $$Q$$, far from other charges, is fixed a distance $$\cfrac{1}{2}s$$ above the center of a square with side length s as shown in the diagram. What is the value of the electric flux that passes through the square due to the charge $$Q$$?