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14 cards from this deck
Heat energy produced when current flows through resistance
Electrons collide with atoms, transfer kinetic energy
W=I2RtW = I^2RtW=I2Rt
WproptoI2W propto I^2WproptoI2 (proportional to current squared)
Produces four times as much heat
Rate at which energy is converted or transferred
P=I2RP = I^2RP=I2R
P=VIP = VIP=VI
P = rac{V^2}{R}
Linear I-V relationship, constant resistance
Non-linear I-V relationship, resistance changes with temp
Resistance increases as temperature rises
Resistance decreases as temperature increases
rac{ ext{useful output power}}{ ext{input power}} imes 100%
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