DP Physics (last assessment 2024)

Question 20N.1.HL.TZ0.15

Date	November 2020	Marks available	[Maximum mark: 1]	Reference code	20N.1.HL.TZ0.15
Level	HL	Paper	1	Time zone	TZ0
Command term		Question number	15	Adapted from	N/A

15.

[Maximum mark: 1]

20N.1.HL.TZ0.15

A cell of electromotive force (emf) $E$ and zero internal resistance is in the circuit shown.

What is correct for loop WXYUW?

A. $E = 3 I_{1} R - I_{3} R$

B. $E = I_{3} R - I_{2} R$

C. $E = I_{3} R$

D. $E = 2 I_{2} R - I_{3} R$

[1]

Markscheme

Examiners report

There are a high number of blanks responses indicating that some candidates decided to leave it until the end. It perhaps looked complicated but pleasingly over half did get the correct answer with choices reasonably evenly balanced between the three wrong answers suggesting that these were guesses.

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Core

Core » Topic 5: Electricity and magnetism » 5.2 – Heating effect of electric currents

Core » Topic 5: Electricity and magnetism

Question 20N.1.HL.TZ0.15

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