Question

can anyone explain me why like charges repel and unlike charges attract each other ??

Answer 1

Protons have a positive electrical charge. ... These two electrons both have a negative charge so their lines of force are repelled. Like charges repel, unlike charges attract. Two electrons will tend to repel each other because both have a negative electrical charge.

Answer 2

Because the photon has a spin value of 1, like charges repel; for force carriers with spins of 0 and 2, like charges actually attract. ... This is why gravity involves "like charges" (mass) attracting each other; because gravity can be thought of as having a spin 2 force carrier.