How do you add I1, I2, I3, I4 to get I5?

Matty9879 · Mar 9, 2005

What is I5 I think its I3-I4+I2+I1 but not surehow to add em up any tips?

thanks

dextercioby · Mar 9, 2005

Yes,it is correct.Electric charge is conserved.With the regular choise of signs,the I_{5} should be -12A.

Daniel.

Andrew Mason · Mar 9, 2005

Matty9879 said:

What is I5 I think its I3-I4+I2+I1 but not surehow to add em up any tips?

Think of current as water flow. The current at a point is the sum of all currents entering at that point minus all currents leaving that point. Your answer is correct.

AM

dextercioby · Mar 9, 2005

Up to the minus.

Daniel.

Matty9879 · Mar 10, 2005

Thanks for the reassurance but by the way it wasnt neative

dextercioby · Mar 10, 2005

It had to be.That's the rule.All currents entering a vertex are positive,while all which are leaving are negative.

Daniel.

How do you add I1, I2, I3, I4 to get I5?

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How do you add I1, I2, I3, I4 to get I5?

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