AP Physics 1 Question 298: Answer and Explanation
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6. Question below refers to the below circuit diagram.
If switch S2 is connected to point B but switch S1 is left unconnected, what is the current through the 1-Ω resistor?
- A. 0 A
- B. 2 A
- C. 3 A
Correct Answer: C
With S1 open but S2 closed, only the right-hand loop is connected. Again, the resistors are in series so the equivalent resistances is Req = 4 Ω + 1 Ω + 3 Ω = 8 Ω. The current through the circuit including the 1 Ω resistor is Iright = .