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A circuit includes a 220 resistor connected in series with two parallel resistors with values of 120 and 300. Whats the total circuit resistance?

Respuesta :

for parallel resistors:
[tex] \frac{1}{r } = \frac{1}{120} + \frac{1}{300} [/tex]
equivalent resistance: 85.7 ohms

for total circuit:
85.7 + 220 = 305.7ohms
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