Calculating the Potential Difference Across Resistors - WORKED EXAMPLE - GCSE Physics

This video is a worked example of calculating potential difference (voltage). This is a popular type of question for students to be asked and this one is specific to calculating the potential difference across resistors in a parallel circuit with three loops, one of which has two resistors connected in series.

We need to be able to be comfortable calculating the potential difference in a parallel circuit as well as calculating the potential difference in a series circuit in order to calculate the potential difference across resistors connected in series and parallel.

The question is as follows:
Calculate the potential difference across all the resistors in the circuit in the video. 

Thanks for watching,

Lewis

Relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy)
Edexcel
CCEA
OCR A
OCR B
WJEC
CIE (Cambridge International Examinations) IGCSE
Edexcel International IGCSE

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[ummisyuhaidah]

How to find the R4 if 4.5V is not given ?

[ofon]

Please sir Do you have Videos explaining Wheatstone Bridge and Kirchoff laws?

[sari.-_-]

Sir I have doubts. what is the potential difference between R3 and R4

[taladaouk]

if they ask to Calculate the potential difference across the generator,
this generator is parallel to (resistors and a motor
what should i do then?