Calculating I4 in Combination Circuit

ericgibbs

Joined Jan 29, 2010
18,766
hi,
OK,
Thats a very rough answer.
I would advise you when asked for a 2decimal place answer, is to do the calculations to 3 deci places and round up the final answer to two places.
The actual current is 76mA , but you have 66.7' due to limiting your answers to 2 deci places .OK.
E
Do the sums again to 3 deci places.
 

Thread Starter

aeln269

Joined Oct 18, 2020
31
are you referring to all of the calculations? or just the I=V/R? Because Its just 1/15 so I cant specify anymore...

Also thank you for your help. I think I had the process right.
 

ericgibbs

Joined Jan 29, 2010
18,766
hi,
Consider the 24V/105R = 0.228A

So Vdrop 100R is V= 100R*0.228A =22.8V

24V- 22.8V = ~1.2V across R4

Now that you have stepped thru the circuit in a visual way, you should now be able to build up an equation.

E
 
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