Voltage: Voltage is the potential difference between two points in a circuit. It represents the force that pushes electrons through a circuit.
Resistance: Resistance is a measure of how much a component opposes the flow of current in a circuit. It determines how much voltage is needed to produce a certain amount of current.
Ohm's Law: Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance. It can be expressed as I = V/R, where I is current, V is voltage, and R is resistance.