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resistance
a quantity measured in Ohms and is symbolized by capital Omega
power
voltage times resistance equals what?
Joule's first law
law that states P = I squared times R, where P is power dissipated by the resistor
rheostat
also known as a variable resistor; made of a material of uniform resistivity where the amount of material can vary
Wheatstone bridge
a diamond-shaped arrangement of two resisters, a rheostat, and an unknown resistor used to measure resistances
ammeter
device used to measure current
kirchhoff's laws
laws that state: the total current flowing in a circuit = the total current flowing out of a circuit; the total voltage change around any loop of a circuit is 0 V.
Note
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