190104B Flashcards
Electrical Circuits
Characteristics of series circuits?
current is same at every point in circuit
total resistance= sum of individual resistances
sum of voltage drops= applied or source voltage
characteristics of parallel circuits?
voltage applied to each path is same
current flow determined by resistance in and voltage applied to each path
total current= sum of individual current
adding resistance decreases total resistance
removing resistance increases total resistance
What is a rheostat?
variable resistor
What is kirchoffs current law?
sum of electrical current flowing away from any point must equal sum of electrical current flowing toward that point
what is an open?
break in a circuit. no continuity
what is a short circuit?
current taking a path not intended
what is a ground fault?
live conductors come in contact with an electrical ground