- #1
Hooke's Law
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Homework Statement
The components of a circuit with a voltage source and 2 resistors ( series ) has the following values vs = 10V, R1 = 100 , R2 = 150. With i1 leaving the +ve vs and i2 leaving -ve vs ( i.e. i1 entering node A, i2 is entering in the opposite direction of i1 )
Find:
a) Currents through each resistor
b) Voltages across each resistor
c)power dissipated by each resistor
d) power supplied by source
e)equivalent resistance seen by the source
Homework Equations
V=iR
P= iV
P-power
i- current
R- resistance
The Attempt at a Solution
4Since the circuit is in series i1=i2=is
vs = v1 + v2
vs = isR(eq)
R(eq) = R1 + R2 = 250 ohms
vs / R(eq) = is ====> is = (10v)/(250 ohms) = 0.04A
v1 =isR1
v1 = (0.04 A)(100 ohms) = 4V
v2 = isR2
v2 = (0.04A)(150 ohms) = 6 V
P1= isv1
P1=(0.04A)(4v)=0.16W
P2 =isv2 = (0.04 A) (6V)= 0.24 W
Ps = isvs
Ps = 0.4W
Is there something wrong in my calculations or concept? & what does it mean by "e)equivalent resistance seen by the source"?
Thanks
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