DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ1.20

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ1.20
Level SL Paper 1A Time zone TZ1
Command term Question number 20 Adapted from N/A
20.
[Maximum mark: 1]
22M.1A.SL.TZ1.20

In the circuit shown, the battery has an emf of 12 V and negligible internal resistance. Three identical resistors are connected as shown. The resistors each have a resistance of 10 Ω.

The resistor L is removed. What is the change in potential at X?

A.  Increases by 2 V

B.  Decreases by 2 V

C.  Increases by 4 V

D.  Decreases by 4 V

[1]

Markscheme

B

Examiners report

The majority of HL candidates correctly determined the magnitude of the potential but determining the direction of the change was more problematic. More candidates (incorrectly) selected option A than the correct option B, reinforcing the importance of a conceptual understanding of circuits and potential change.

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