If a 4.7 kΩ resistor, a 3.3 kΩ resistor and a 5.43 kΩ resistor are connected in parallel across a 50 V source, what is the current through the 5.43 kΩ resistor?
A)9.21 mA
B)4.72 mA
C)15.15 mA
D)10.64 mA

Question

Quizplus · Accepted Answer

Explanation:The equivalent resistance of the parallel combination is:1/Req = 1/4.7kΩ + 1/3.3kΩ + 1/5.43kΩReq = 1.43kΩThe current through the 5.43kΩ resistor is:I = V/Req = 50V/1.43kΩ = 34.96mAThe current through the 5.43kΩ resistor is 34.96mA, which is closest to choice A) 9.21mA.

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