Question

which diagram shows the correct connections to measure voltage with a multimeter
a.

b.

d. not shown

○ b
○ a
○ d
○ c

Explanation:

To measure voltage with a multimeter, the multimeter must be connected in parallel with the component (or power source) across which the voltage is to be measured. Let's analyze each option:

• Option A: The multimeter is connected in series (since it's in the path of the current through the resistor), which is incorrect for voltage measurement (voltage meters are parallel).
• Option B: The multimeter is connected across what appears to be a power source (battery) terminals, but the diagram's clarity might be an issue, but let's check C.
• Option C: The multimeter is connected in parallel with the component (the resistor in the box), with the red (positive) and black (negative) leads across the component, which is the correct parallel connection for voltage measurement.
• Option D: "Not shown" is not correct as Option C shows the correct parallel connection.

So the correct diagram for voltage measurement (parallel connection) is Option C.

Answer:

C. (The option corresponding to the diagram where the multimeter is connected in parallel with the component to measure voltage)