The electrical resistance of a conductor is defined by:
where I is the current flowing through the conductor and V is the potential difference across the conductor.

The power disipated by a resistor is given by Joule′s law:
W = power disipated [Watt]
I = current [Ampere]
R = resistance [Ohm]
V = potential difference across resistor [Volt]
Enter two values and the other values will be calculated.
Resistors in Series
The total resistance R of a series of resistors in series is:
Resistors in Parallel
The total resistance R of a series of resistors in parallel is:

See also: Abohm, Dynamic Resistance, Equivalent Resistance, I Squared R Losses, Joules Laws, Leakage Resistance, Negative Resistance, Ohm, Ohmmeter, Positive Temperature Coefficient, Resistor, Rheostat, RLC Circuit, Superconductivity, Wheatstone Bridge.

Previous PageView links to and from this pageNext Page

Subjects: Electronics Physics

Jointing of Copper Busbars Busbar joining methods and joint resistance.