Question
Q Zoom A student builds this circuit. a) Which lamps will light if switch 1 is closed? A only A and B only B and C only A and B and C None of them b) Which lamps will light if switch 1 and 2 are both closed? A only A and B only B and C only A and B and C None of them
Answer
4
(356 Votes)
Willow
Veteran · Tutor for 11 years
Answer
a)
and
and
, b)
and
and
Explanation
In a series circuit, current flows through every component. If switch 1 is closed, it completes the circuit, allowing current to flow through all lamps, lighting them up.b) The question asks which lamps will light if both switches 1 and 2 are closed. Again, without a diagram, we can only make assumptions. Let's assume that switch 2 controls lamp B. If both switches are closed, current can flow through the entire circuit, lighting up all lamps. So, the answer to this part is also
and
and
.【Explanation】: If switch 2 controls lamp B, closing it allows current to flow through lamp B. Since switch 1 is also closed, current can flow through the entire circuit, lighting up all lamps.