Infinite Resistor Ladder Network
An infinite ladder network is constructed using resistors of resistance R for the rungs and resistors of resistance r for the sides. If the equivalent resistance of the entire network measured at the input terminals is Req, which of the following equations correctly relates Req, R, and r?
A
Req = r/2 + √(r²/4 + Rr)
B
Req = R + r
C
Req = Rr/(R+r)
D
Req = r + R/(1+R/r)
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