Question

An rms voltage of $110V$ is applied across a series circuit having a resistance $11\Omega$ and an impedance $22\Omega$. The power consumed is

• A. $275W$
• B. $366W$
• C. $550W$
• D. $1100W$

Answer 1

The correct option is A $275W$

$I_{rms}^2=\frac{V_{rms}}{impedance}=\frac{110}{22}=5A$
Power consumed = $I_{rms}^{2}R=5^2\times 11=275W$