**Ohm's Law**

## The relationship of voltage and current in an ideal conductor.

**Voltage** *- electric potential energy, measured in Volts *

**Current** - *flow of electrons, measured in Amps*

**Resistance** - *Amount by which a substance slows the flow of electrons, measured in Ohms*

# Relationships

**When resistance is increased and voltage is kept constant, the current decreases.**

**When voltage increases and resistance remains constant, the value of the current increases.**

# Application in Circuits

Circuit 1, follows the Ohm's law as V=IR ( 9V = 0.90Amps x 10.00 Ohms).

Voltage and Current are directly proportional.In Circuit 2, the voltage was doubled and therefore the current also doubled while the resistance stayed constant. (18V = 1.80Amps x 10.00Ohms)

In Circuit 3, the resistance was increased and as a result the current decreased by the same amount. (18V = 0.90Amps x 20.00Ohms)