- #1

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maybe it's just my math but, assuming different things gives different answers. The textbook (hambley's) says that it's fine to select arbitary current directions. Should choosing arbitary currents vastly change the answer?

- Thread starter Learnphysics
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- #1

- 92

- 0

maybe it's just my math but, assuming different things gives different answers. The textbook (hambley's) says that it's fine to select arbitary current directions. Should choosing arbitary currents vastly change the answer?

- #2

vk6kro

Science Advisor

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So, some currents will be going in and some will be coming out and the total current going in must equal the total current coming out.

It is usual to assign realistic guesses of current directions to the currents and if one of them proves to be wrong, it will have a negative sign attached to it when you solve the equations.

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