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three resistors are connected

the resistances are R2 = 2 R3= 3 R1=r

r is not specified

Question: Derive the total resistance of the system as an expression containing r

1 answer

if they are in series, then

R = 2+3+r

If they are in parallel, then

1/R = 1/2 + 1/3 + 1/r

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