3.8 Multiple Resistors In Circuits Flashcards
Total resistance in series equation
R TOTAL = R1 + R2 + R3 +…
Total voltage in series equation
V TOTAL = V1 + V2 + V3 +…
Kirchhoff’s 2nd Law (Kirchhoff’s Voltage Law)
The sum of the voltage drops around a single closed path equals the sum of the voltage sources.
In a parallel circuit, total resistance is …..
Lower than the lowest individual resistance
Kirchhoff’s 1st law (Kirchhoff’s Current Law)
At any point in an electrical circuit, the sum of currents flowing towards that point is equal to the sum of currents flowing away from that point.
Total resistance in parallel equation
1/Rt = 1/R1 + 1/R2 + 1/R3 +…
What is a Wheatstone bridge?
Used to measure an unknown electrical resistance by balancing two legs of a bridge circuit