Question Guide – DC Circuit – Potential Divider

Question:
The figure below shows a circuit that uses a potentiometer R2.
The resistance of R2 is 10 Ω.
R2 is divided into two sections, AX and XB, by the slider X.
Section XB of R2 has a resistance of 3.2 Ω.
The resistance of the lamp is also 3.2 Ω.
Calculate the total resistance of the circuit.

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Observation:
Firstly, identify whether it is a series or parallel circuit overall.
Overall, it is a series circuit where the lower section contains a parallel sub-circuit.
O Level Physics DC Circuit - Potential Divider Solution Image

Solution:
O Level Physics DC Circuit -  Potential Divider Solution

This question falls under the topic DC Circuit – Potential Divider in Physics tuition for O Level.

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Question Guide – DC Circuit – Potential Divider ultima modifica: 2017-10-13T08:49:56+00:00 da LearningForKeeps