# The capacitance value that makes the voltage in phase with current

What's the value of the capacitor that makes the voltage in phase with current , and then what's the circuit current and power?

• Looks like homework without any effort on your part. Add details of what you tried and where you are stuck. Dec 5, 2017 at 22:39
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• You will learn to match reactive impedances at resonance. Dec 5, 2017 at 22:53

$$\underline{\text{Z}}_{\space\text{in}}=6,25+1,25\text{j}+\frac{1}{\frac{1}{5}+\frac{1}{5+\frac{1}{100\pi\text{C}\text{j}}}}\tag1$$
$$\arg\left(\underline{\text{Z}}_{\space\text{in}}\right)=0\space\Longleftrightarrow\space\text{C}=\frac{1}{1000\pi}\tag2$$