- #1
sylvarant
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Homework Statement
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
Homework 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
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 ?