DP Physics (first assessment 2025)

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Question 19M.1A.SL.TZ2.2

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1A.SL.TZ2.2
Level SL Paper 1A Time zone TZ2
Command term Question number 2 Adapted from N/A
2.
[Maximum mark: 1]
19M.1A.SL.TZ2.2

What is the unit of electrical potential difference expressed in fundamental SI units?

A. kg m s-1 C-1

B. kg m2 s-2 C-1

C. kg m2 s-3 A-1

D. kg m2 s-1 A

[1]

Markscheme

C

Examiners report

The most popular answer was B giving a low discrimination index for this question. It should be a relatively straightforward question provided the candidate can remember which of ‘C’ or ‘A’ is the fundamental unit.

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