Physics

Physics

Problem

A series AC circuit is operated at angular frequency 500 rad s−1500\,\text{rad\,s}^{-1}. Which of the following component sets will ensure that the current drawn from the source is wattless? a) R=5 Ω,  L=0.40 H,  C=10 μFR=5\,\Omega,\;L=0.40\,\text{H},\;C=10\,\mu\text{F} b) R=5 Ω,  L=0.40 HR=5\,\Omega,\;L=0.40\,\text{H} (no capacitor) c) R=0 Ω,  L=0.40 HR=0\,\Omega,\;L=0.40\,\text{H} (no capacitor) d) R=5 Ω,  C=1 μFR=5\,\Omega,\;C=1\,\mu\text{F} (no inductor)

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