Question

which of these is an example of quantitative data?
the light bulb shines when the circuit is complete.
the voltage source has 12 volts.
the switch is in the on position.
the wire is encased in a green insulator.

Explanation:

Quantitative data is numerical information that can be measured or counted. Among the options, only the voltage value is a measurable numerical quantity, while the others are qualitative (descriptive, non-numerical) observations.

Answer:

The voltage source has 12 volts.