Power As A Function of Resistance
The power dissipated by a linear resistor may be calculated from its resistance, and voltage or current. The formula is a combination of Ohm's law and Joule's laws:
where:
- P = power in watts
- R = resistance in ohms
- V = voltage across the resistor
- I = current through the resistor in amps
This formula is applicable to devices whose resistance varies with current.
Read more about this topic: Ohm
Famous quotes containing the words power, function and/or resistance:
“When petty people get into power they consider themselves unexcelled in the world.”
—Chinese proverb.
“If the children and youth of a nation are afforded opportunity to develop their capacities to the fullest, if they are given the knowledge to understand the world and the wisdom to change it, then the prospects for the future are bright. In contrast, a society which neglects its children, however well it may function in other respects, risks eventual disorganization and demise.”
—Urie Bronfenbrenner (b. 1917)
“High treason, when it is resistance to tyranny here below, has its origin in, and is first committed by, the power that makes and forever re-creates man.”
—Henry David Thoreau (1817–1862)