C28 - DC Circuits

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11 Terms

1

Electromotive force (emf)

ε = max. possible voltage from a battery

2

internal resistance

resistance in objects & devices due to physical nature (i.e. batteries)

3

circuit internal resistance

∆V = ε - Ir
r = internal resistance

4

circuit internal resistance (power form)

5

junction

any point in a circuit where current splits

6

resistors (series)

Req = R1 + R2 + . . .

7

resistors (parallel)

Req = (1/R1 + 1/R2 + . . .)-1

8

Kirchoff’s rules

∑ ∆V = 0

*LOOPS

Iin = Iout
*JUNCTIONS

9

RC circuits

circuit having a resistor & capacitor in series

10

instantaneous charge & current (capacitor charge)

11

instantaneous charge & current (capacitor discharge)