DP Physics (first assessment 2025)

Question 23M.1A.SL.TZ2.17

Date	May 2023	Marks available	[Maximum mark: 1]	Reference code	23M.1A.SL.TZ2.17
Level	SL	Paper	1A	Time zone	TZ2
Command term		Question number	17	Adapted from	N/A

17.

[Maximum mark: 1]

23M.1A.SL.TZ2.17

A variable resistor is connected to a cell with emf ε and internal resistance r as shown. When the current in the circuit is I, the potential difference measured across the terminals of the cell is V.

The resistance of the variable resistor is doubled.

What is true about the current and the potential difference?

	Current	Potential difference
A.	greater than $\frac{I}{2}$	greater than V
B.	less than $\frac{I}{2}$	greater than V
C.	greater than $\frac{I}{2}$	equal to V
D.	less than $\frac{I}{2}$	equal to V

[1]

Markscheme

Syllabus sections

B. The particulate nature of matter » B.5 Current and circuits

Question 23M.1A.SL.TZ2.17

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