$\"\"$

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625/(((15-10i)*(-12.5i))/(15-22.5i)+5)

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$\"\"$

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Observe the circuit:

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The variable resistor $\"\"$ is in parallel with $\"\"$ .

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$\"\"$

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$\"\"$

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If the circuit is at resonance then $\"\"$ .

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Therefore, $\"\"$

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$\"\"$

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Value of the variable resistor $\"\"$

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$\"\"$ is in parallel to $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$ is in series with $\"\"$

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$\"\"$

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Step 2:

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The input voltage is $\"\"$ .

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It is in the form of $\"\"$ .

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Here $\"\"$ .

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Find the power.

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$\"\"$

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$\"\"$

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$\"\"$

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Find the true power.

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$\"\"$

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True power is $\"\"$

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\