A 120 V RMS source is connected across R = 30 Ω, Xʟ = 40 Ω and Xᴄ = 60 Ω in three parallel branches. Which statements are correct?
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Question

A 120 V RMS source is connected across R = 30 Ω, Xʟ = 40 Ω and Xᴄ = 60 Ω in three parallel branches. Which statements are correct?

G1 Physics · Accepted Answer

Iᵣ=120/30=4 A, Iʟ=120/40=3 A lagging and Iᴄ=120/60=2 A leading. The net reactive current is 1 A lagging. Hence total current = √(4²+1²)=√17 A.