tintincute
New Member
hi
i would like to ask if there are rules on how to solve circuits involving their signs. i have a circuit here and quite confuse with their (-) and (+) flow. are there basis for that?
please see attachment.
My solutions are the following:
Compute the I4, I5, I6, I7, and I8
Given are the ff:
Eq1 = 240 V
Eq2 = 120 V
I1 = 10 A
I2 = 20 A
I3 = 30 A
Steps:
Er + E1 - E2 = 0
My question is why should I minus E2 here? i see that the directions of both voltages are the same.
there must be a reason and i can't remember anymore.
thanks for your help in advance!
regards
note: Er here is the voltage flowing R=100 and I6 the direction is going to the left <----------
i would like to ask if there are rules on how to solve circuits involving their signs. i have a circuit here and quite confuse with their (-) and (+) flow. are there basis for that?
please see attachment.
My solutions are the following:
Compute the I4, I5, I6, I7, and I8
Given are the ff:
Eq1 = 240 V
Eq2 = 120 V
I1 = 10 A
I2 = 20 A
I3 = 30 A
Steps:
Er + E1 - E2 = 0
My question is why should I minus E2 here? i see that the directions of both voltages are the same.
there must be a reason and i can't remember anymore.
thanks for your help in advance!
regards
note: Er here is the voltage flowing R=100 and I6 the direction is going to the left <----------