Engineering Board Exam Reviewer · Series Circuits · medium
A 12 V battery and a 6 V battery are connected in series so that they aid each other, across a 9, resistor. Find the current.
- 0.67 A
- 1.33 A
- 2 A
- 0.5 A
Answer
C. 2 A
Solution
Series-aiding batteries add: 12+6=18 V. I=18/9=2 A. (If they opposed each other the current would be 12-6/9=0.67 A.)
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