A 60 rtesistor and a 40 are connected inparallel to a 120 V power supply. (a) Wh

Question

A 60 rtesistor and a 40 are connected inparallel to a 120 V power supply. (a) What is the current through each resistor? (b) What is the total resistance of the combination? (c) If the resistance were connected in series, what would bethe current through each? What would be the voltage drop acrosseach? A 60 rtesistor and a 40 are connected inparallel to a 120 V power supply. (a) What is the current through each resistor? (b) What is the total resistance of the combination? (c) If the resistance were connected in series, what would bethe current through each? What would be the voltage drop acrosseach?

Explanation / Answer

(a) i1 = V / R1 = 120 / 60 = 2.0 A       i2 = V / R2 = 120 / 40 = 3.0 A (b) Req = R1*R2 / (R1 + R2)               = 60 * 40 / 100               = 24 (c) Req = 100 , i = V / Req = 120 / 100 = 1.2 Athrough each .        V1 = i R1 = 1.2 * 60 = 72V        V2 = i R2 = 1.2 * 40 = 48V

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