charges and coloumb's law

a. neutral. b. negative. c. positive

Bodies with the same electric charge, if the brought close together will repel each other, while bodies different electric charge. If they are brought close together, will attract each other.

The unit of charge in SI is Coloumb (C) to appreciate Charles Augustin de Coloumb who covered the electricity teorems.

The mass and charge of electrons, proton and neutron in an atoms can be seen in table.

Particle	Mass	Charge
Electrons	9.1 x 10-31 Kg	-1.6 x 10-19 coloumb
Protons	1.67 x 10-27 Kg	1.6 x 10-19 coloumb
Neutrons	1.67 x 10-27 Kg	0

Coloumb’s Law

The force of attraction or repulsion between two electric charges id directly proportional to their charges and inversely proportional to the square of distance between the two charges.

F = force Coloumb (N)

Q1,q2 = charge (C)

R = Distance (m)

K = Konstant of coloumb force = 9 x 10⁹ Nm²/C²