Circuit with two batteries solved by Node Voltage Method (1)

A learner wrote in with this question as she prepared for a physics test. We solve it using the Node Voltage Method. Finish up with Circuit with two batteries solved by the Node Voltage Method (2).

Resources

• Definition of a node: video(@ 50 seconds), article

• Definition of a node voltage: video, article

• Node Voltage Method: article

• Kirchhoff’s Current Law: video, article

Created by Willy McAllister.
(This is the very first video I made for Spinning Numbers.)