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Question 20N.2.HL.TZ0.5a

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.2.HL.TZ0.5a
Level HL Paper 2 Time zone TZ0
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 1]
20N.2.HL.TZ0.5a

The graph shows how current I varies with potential difference V across a component X.

(a)

Outline why component X is considered non-ohmic.

[1]

Markscheme

current is not «directly» proportional to the potential difference
OR
resistance of X is not constant
OR
resistance of X changes «with current/voltage» ✓

Examiners report

Most answers that didn't score simply referred to the shape of the graph without any explanation as to what this meant to the relationship between the variables.

Syllabus sections