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Differentiate1
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Homework Statement
a) Find Req of the circuit
b) Find the potential difference across resistance R3[/B]
Homework Equations
Resistors in parallel = (1/R1 + 1/R2 + 1/R3 + ...)^-1
Resistors in series = R1 + R2 + R3 + ...
The Attempt at a Solution
a)
R3 and R4 are in parallel --> [ (1/40Ω) + (1/50Ω) ]^-1 = 200/9 Ω
R2 and R_34 are then in series --> 50Ω + (200/9)Ω = 650/9 Ω
R1 and R_234 are then in parallel --> [ (1/40) + (650/9) ]^-1 = 25.7Ω
b)
This is the part I need help with as I'm clueless on even how to start. Any guide is appreciated.