- #1
gatsbycollege
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Homework Statement
The Circuit is given as shown in the figure
http://img215.imageshack.us/img215/8361/circuitsl.jpg
find V,
V, = ranging from 78v - 90v
Homework Equations
KVL
E=E1+E2+E3...+En
KCL
I=I1=I2
Ohms Law
V=IR
The Attempt at a Solution
i used KVL
72v-2000ohms(i)-0.5V,-V,=0
then i have this equation
72v=1.5V, +2000i (1)
in the 2nd resistor with 3000ohms
i derived the equation
V,=(2I)(3000ohms)
so V,=6000ohmsi (2)
substitution in eq (2) and (1)
i=0.007A
then going back to eq (2)
V,=42v <---- but this is not correct by looking at the range my prof gave me..
so i think i missed something here or my whole idea is not correct..
btw i don't really know if that 2i is in series with the resistor 3000ohms
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