Adding I1,I2,I3,I4 to Get I5 - Tips & Tricks

[Matty9879]

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

thanks

 

[dextercioby]

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

Daniel.

 

[Andrew Mason]

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]

Up to the minus.

Daniel.

 

[Matty9879]

Thanks for the reassurance but by the way it wasnt neative

 

[dextercioby]

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

Daniel.