Electrical Force

Electricity

Electricity is the presence and flow of electric charge. It is a fundamental force of nature associated with the movement of electrons and protons within atoms.

Examples electricity

Lightning, sparks, electric current, nerve impulse, static electricity. All observable forces (except gravity) have an electric origin.

• Quantity electric charge

• SI unit

• measured with

• elementary charge

• Q

• C (Coulomb)

• electrometer

• e, 1.60×10^-19 C

Moving charges

• friction

• contact (electroscope)

• influence

Polorization

The movement of electrons and positive nucli in a non-conductive object resulting in dipoles where the electrons move within the molecules

Coulombs law

The magnitude of the electrostatic force attraction or repulsion between two point charges is directly proportional to the magnitudes of charges and inversely proportional to the square of distance between them

|F1|=|F2|=k*(|Q1|*|Q2|)/r²