BASIC DC CIRCUIT CALCULATIONS
Basic DC Theory
Figure 22 Example 2 Series Circuit
Solution:
Step 1:
Find total resistance.
RT = R1 + R2 + R3
RT = 40 W + 60 W + 100 W
RT = 200 ohms
Step 2:
Find circuit current (I).
VT = IRT
Solving for I:
I
VT
RT
I
120 volts
200 W
I
0.6 amps
ES-02
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