(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have the following circuit

http://informatici.vankeer.eu/files/2/Untitled.png

R1 = 22 ohm, R2 = 39, R3 = 82, R4 = 100,R5 = 10

and V = 2volt

I'm asked to calculate the voltage and current over de resistors

when the switch is open and when the switch is closed

2. Relevant equations

when 2 resistors form a combination the current is the same and V = IR

when 2 resistors are in parallell there voltages are the same and Ii = V/Ri

3. The attempt at a solution

well when the switch is open I obtain the following

the resistors R1 and R4 form a combination and so do R2 and R3 the voltage remains equal for both combinations so we can easily calculate the current

I1=I4 = 2v/(22+100)ohm = 0.016 A

now we find the voltage over both resistors

V1= 0.016 * 22 = 0.361 Volt

v4 = 0.016 * 100

Same way for I2 and I3

But I'm stuck when the switch is closed how do I calculate the current and voltage then ?

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# Homework Help: Voltage and current calculation on a mixed circuit

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