R1=2.0? ________________^^^^^_______ | | | < | < R2=2.0? < | R4=2.00 ? | -------
ID: 2103422 • Letter: R
Question
R1=2.0?
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| < R2=2.0?
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| R4=2.00 ? |
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R3=2.0?
Suppose the resistor arrangement above is connected to a 12-V battery. (a) What will be the current in each resistor? (b) What will the voltage drop across each resistor? (c) What would the total power delivered?
Explanation / Answer
R eq = (R1 + R2)||R4||R3
Req = 0.8 ohm
a)
I1= I2 = V/(R1 + R2) = 12/4 = 3A
I3 = 12/2 = 6A
I4 = 12/2 = 6A
b)V across R1 = V across R2 = 12/2 = 6V
V across R3 = V across R4 = 12V
c) Power= Vdrop^2 / R
= (6^2 + 6^2 + 12^2 +12^2 )/2 = 180 W
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