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Homework Statement
In Fig. 28-5a calculate the potential difference across R2, assuming = 14 V, R1 = 6.0 , R2 = 3.0 , and R3 = 2.0.
(image isn't working online, but it's a simple circuit- all the resistors are in series)
Homework Equations
V = IR
The Attempt at a Solution
Req = R1 + R2 + R3 = 11 ohms
I = V/Req = 14/11 = 1.27 A
V = IR1 = 1.27 * 6 = 7.62 V
V = IR2 = 1.27 * 3 = 3.81 V
So I know the voltage drop across R1 and R2, but I'm confused- what's the difference between calculated voltage drop and the potential difference across the resistor?
Many thanks.