How do subatomic particles create net charge on objects?

If an object has more protons than electron then the net charge on the object is positive but if it has more electrons than protons the net charge on the object is negative.  The object is electrically neutral if the number of protons is equal to the number of electrons.

Explanation:

Atom is composed of different subatomic particles . The 3 major subatomic particles are proton , neutron and electrons. The proton and the neutron is concentrated in the nucleus of an atom. The  nucleus forms the dense core of an atom. The protons are positively charged while the electrons are negatively charged .The neutrons are neutrally charged.  The electrons forms a cloud around the nucleus of an atom.

The net charge is defined as sum of the charges on an object.  The 2 electric charges available are positive or negative charges. The proton are positive while the electron are negative. Although the mass of the proton is greater than the electron but the magnitude of their charges are equal . If an object has more protons than electron then the net charge on the object is positive but if it has more electrons than protons the net charge on the object is negative.  The object is electrically neutral if the number of protons is equal to the number of electrons.

photocells convert light energy to electricity

a 2,000 calorie based diet.