Need to calculate current flowing through parallel resistors.

[rdhc1330]

Yes you can, that is the correct answer and the discrepancy is only due to rounding errors.

The current divider that you were going to end up with is as follows:

Ir = Rt / (Rt + Rn) * I

Ir4 = (R3||R5||R6) / (R3||R5||R6 + R4) * I

Ir4 = [ 1 / (1/R3 + 1/R5 + 1/R6) ] / { [ 1 / (1/R3 + 1/R5 + 1/R6) ] + R4 } * I

Ir4 = [ 1 / (1/90 + 1/70 + 1/60) ] / { [ 1 / (1/90 + 1/70 + 1/60) ] + 80 } * 0.337

Ir4 = 23.77 / ( 23.77 + 80 ) * 0.337

Ir4 = 0.229 * 0.337

Ir4 = 0.077

I have a quick question, how do you calculate Collector emitter resistance?

 

[Zryn]

It's best to start a new thread with any diagrams, equations and workings you have.