alleryStart learning →In that same circuit, the blue branch draws 0.80 A and the red branch draws 0.60 A from the 12 V battery. What is the total current supplied by the battery?
A0.20 A
B0.48 A
C1.4 A
D2.0 A
Answer & Solution
Correct answer: C. 1.4 A
1. Charge that leaves the battery splits between the two parallel branches and must recombine before returning, so the branch currents add up to the total.
2. Total current: I = I_blue + I_red = 0.80 A + 0.60 A.
3. I = 1.4 A.
4. 0.20 A is the difference of the two branch currents, not their sum, and does not represent the battery current.
_Source: OpenStax Physics (CC BY 4.0), Ch 19 "Electrical Circuits", section Strange-Looking Circuit Diagrams_
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