# Question Video: Identifying a Measurement of Electric Potential Difference Science

Which of the following is a measurement of electric potential difference? [A] 112 A [B] 236 J [C] 24 V [D] 360 W [E] 49 C

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### Video Transcript

Which of the following is a measurement of electric potential difference? (A) 112 amperes, (B) 236 joules, (C) 24 volts, (D) 360 watts, (E) 49 coulombs.

We’re being asked here to identify which of five options is a measurement of electric potential difference. Let’s recall that a complete description of a measurement includes three things: the quantity being measured, the measured value, and the unit associated with that value. In this case, the quantity that’s being measured is electric potential difference. We’re told this in the question text. As for the value, we can see that all five answer options begin with a numerical value.

To determine which of these options can be a measurement of electric potential difference though, we need to consider the unit associated with each value. Specifically, we need to identify which option shows a measurement that uses the correct unit of electric potential difference.

Let’s recall that the SI unit for electric potential difference is the volt, named after Italian scientist and inventor of the battery Alessandro Volta. This unit is abbreviated with the symbol capital V.

We can see then that the only answer option in units of volts is option (C). The measurement of electric potential difference from this list of options is 24 volts.