DP Physics (first assessment 2025)

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Question 22N.1A.SL.TZ0.17

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1A.SL.TZ0.17
Level SL Paper 1A Time zone TZ0
Command term Question number 17 Adapted from N/A
17.
[Maximum mark: 1]
22N.1A.SL.TZ0.17

A cell of negligible internal resistance is connected to three identical resistors. The current in the cell is 3.0 A.

The resistors are now arranged in series.

What is the new current in the cell?


A.  1.0 A

B.  1.5 A

C.  3.0 A

D.  9.0 A

[1]

Markscheme

B

Examiners report

This question was answered well and discriminated well, especially at HL. The resistance of the connection doubles (from 1.5R to 3R) therefore the current is halved.

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