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20 April, 18:56

Can someone explain to me how to do circuit calculations

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  1. 20 April, 19:28
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    Use the following rules:

    - The sum of currents that enter and exit a node (junction) is always zero. So if you have 3 wires that connect, through one flows 2A, the other 3A, then the third must deliver 5A (taking the direction into account!)

    - The sum of voltages across different components should always add up. So if you have a battery of 10V with two unknown resistors, and over one of the resistors is 4V, you know the other one has the remaining 6V.

    - With resistors, V=I*R must hold.

    With these basic rules you should get a long way!
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