An inductor of and a resistor of are connected in series with a

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

An inductor of

0.50\,\text{H}

and a resistor of

10\,\Omega

are connected in series with a

50\,\text{V (rms)}

50\,\text{Hz}

ac source. To obtain the maximum current, you may insert a

20\,\mu\text{F}

capacitor, an

80\,\mu\text{F}

capacitor, or both capacitors connected in parallel. Which option results in the greatest current at

50\,\text{Hz}

? (a) only the

80\,\mu\text{F}

capacitor inserted (b) both capacitors connected in parallel inserted (c) only the

20\,\mu\text{F}

capacitor inserted (d) no capacitor inserted