Voltage, Electric Force, and Capacitance

Voltage, measured in volts or joules per coulomb, is the potential difference between two points. Voltage represents a source of energy, like a battery. In scientific terms, voltage is equal to the work which would have to be done, per unit charge, against a static electric field to move the charge between two points. Voltage is made so that negatively-charged objects are pulled towards higher voltages, while positively-charged objects are pulled towards lower voltages. Maybe that is why the numbers on the voltmeter thing would come out positive sometimes and negative the others (depending on what color wire it was attached to). Protons have a positive charge while electrons have a negative charge. The proton exerts an attractive force on the electron that is invisible, which is called electric force. In electric forces, negative charges are attracted to positive charges and vice versa. Negative charges repel negative charges and positive charges repel other positive charges. the equation used to find Capacitance is C=Q/V. The more charge stored per unit of V, the higher the value of C. Since V relates to the amount of work needed to produce the charge Q on the plates of the capacitor, having a high capacitance means it stores more charge for less work done in charging