Mesh currents and nodal analysis in circuit problems

[bobob12456]

Homework Statement

Please can I have some help

Relevant Equations

mesh current and nodal

Hi there, I have managed to work out the kirchoff's law bit but for the other two bits I just cant get started as I can get my head around it, its due in on monday I dont know why I left it so late!

 

[scottdave]

Welcome to Physics Forums. The way homework help works - you post what you have attempted, then we guide you towards a solution.
Can you post what equations you have set up?

 

[DaveE]

Khan Academy has some good tutorials on this subject.

 

[scottdave]

Khan Academy has some good tutorials on this subject.

Yes, there is a good walkthrough here - https://www.khanacademy.org/science...-dc-circuit-analysis/a/ee-node-voltage-method