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Resistance
RESISTANCE is the opposition to current flow. It is measured in ohms and is represented by the
letter R.
Formulas for resistance:
Voltage
VOLTAGE exists when a charge exists between two bodies. When a one coulomb charge exists,
one unit of electrical potential energy is created. This is called a difference of potential, an electromotive
force, or a voltage. It is measured in volts and represented by the letter E.
Formulas for voltage:
