Question

which diagram shows the correct settings to measure resistance with a multimeter
a.
b.
c.
d. not shown
options: (first option with cursor), d, b, a

Explanation:

To measure resistance with a multimeter, the resistor must be disconnected from the circuit (no power source in the circuit with the resistor), and the multimeter should be set to the resistance (ohm) setting.

• In diagram a, the resistor is in a circuit with a battery (power source), so it's incorrect to measure resistance this way (should be disconnected from the circuit with voltage/current sources).
• In diagram b, the resistor is isolated (not in a circuit with a power source), and the multimeter is set to the resistance (ohm) setting (the dial is on the ohm symbol or resistance range), and the probes are connected across the resistor.
• In diagram c, the resistor is still in a circuit with a battery, so it's incorrect.

So diagram b shows the correct settings.

Answer:

B. Diagram b