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Date November 2020 Marks available 1 Reference code 20N.1.HL.TZ0.18
Level Higher level Paper Paper 1 Time zone 0 - no time zone
Command term Question number 18 Adapted from N/A

Question

An electrical power supply has an internal resistance. It supplies a direct current I to an external circuit for a time t. What is the electromotive force (emf) of the power supply?

A.  total energy transferred to the whole circuitI×t

B.  total power transferred to the whole circuitI×t

C.  total energy transferred to the external circuitI×t

D.  total power transferred to the external circuitI×t

Markscheme

A

Examiners report

[N/A]

Syllabus sections

Core » Topic 5: Electricity and magnetism » 5.3 – Electric cells
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Core » Topic 5: Electricity and magnetism
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