Question

Question 10: In a parallel circuit, using the voltmeter, what is true about voltage?

(3 points)

It is different across each bulb.

It is zero in branches.

It is the same across each parallel branch.

It adds up in series only.
Part C: Comparing Circuits with and without Switches
Build one series and one parallel circuit side-by-side, each with and without switches, and compare.

Series on PhET Simulation | Physics - DC Circuits

Question 11: In a series circuit with a switch, closing the switch does what?(3 points)

Allows current to flow.

Increases resistance.

Splits voltage.

Creates multiple paths

Answer 1

Question 10 answer: It is the same across each parallel branch.
- In a parallel circuit each branch is connected across the same two points, so the voltage (potential difference) is the same for every branch.

Question 11 answer: Allows current to flow.
- Closing the switch completes the series circuit so current can flow. (It does not increase resistance, split voltage, or create multiple paths.)