Calculating Resistance, Current and Potential Difference - WORKED EXAMPLE - GCSE Physics

This video is a worked example of calculating resistance, current and potential difference (voltage). This is a popular type of question for students to be asked and this one is specific to calculating the resistance of, the current flowing through and the voltage across multiple components in a parallel circuit with three resistors.

The question is as follows:
Calculate the missing values of R1, A1 and V1 in the circuit below. 

We need to be able to comfortably use and understand the voltage equation, V=IR, in order to answer this question fully.

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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[eamoncrosby]

Lewis your Amazing !
Thank you 😊 I was trying to explain something similar to this to my daughter for 3 hours last week but I made a pigs ear of it . She watch your video and got it second viewing.. your teaching methods and knowledge are second to none 🏆💖

[nmfio]

what if the 10 ohm was parallel with the 20 ohm?