Electricity and magnetism equations

Electric charge of any charged object

Electrostatic force between two point charges (Coulomb’s law)

Strength of electric field (on charged object)

Force of a point charge’s electric field

Strength of a point charge’s electric field

Electrostatic potential energy in an electronic field (homogenic and general)

Difference in voltage of two points in an homogenic electric field

Electric potential (energy needed to move a charge against an electric field)

Potential difference (voltage) using electric potential

Electric potential of a point charge

Coulomb’s constant

9.0×10⁹ (or 8.99)

Capacitance of a capacitor

Electrostatic energy stored in a capacitor

Capacitance, Charge and Voltage on a series connection of capacitors

• Capacitance is the sum of inverses of each capacitor’s capacitance

• Charge on each capacitor is the same

• Voltage divides among the capacitors

Capacitance, Charge and Voltage on a parallel connection of capacitors

• Capacitance is the sum of each capacitor’s capacitance

• Charge on each capacitor varies based on their capacitance

• Voltage is the same across all capacitors