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Question 19N.1A.SL.TZ0.16

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.1A.SL.TZ0.16
Level SL Paper 1A Time zone TZ0
Command term Question number 16 Adapted from N/A
16.
[Maximum mark: 1]
19N.1A.SL.TZ0.16

Two power supplies, one of constant emf 24 V and the other of variable emf P, are connected to two resistors as shown. Both power supplies have negligible internal resistances.

What is the magnitude of P for the reading on the ammeter to be zero?

A. Zero

B. 6 V

C. 8 V

D. 18 V

[1]

Markscheme

B

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