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Figure 21 Example 1 Series Circuit
Parallel Currents
Electrical Science Volume 1 of 4
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BASIC DC CIRCUIT CALCULATIONS
Basic DC Theory
Figure 22 Example 2 Series Circuit
Solution:
Step 1:
Find total
resistance
.
R
T
= R
1
+ R
2
+ R
3
R
T
= 40
W
+ 60
W
+ 100
W
R
T
= 200 ohms
Step 2:
Find circuit current (I).
V
T
= IR
T
Solving for I:
I
V
T
R
T
I
120 volts
200
W
I
0.6 amps
ES-02
Page 28
Rev. 0
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