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Calculate power factor for given RC circuit

Option: 1

1


Option: 2

0.5


Option: 3

2


Option: 4

0


Answers (1)

best_answer

As we learned

 

Power factor -

\cos \phi = \frac{R}{\sqrt{R^{2}+X_{c}^{2}}}

-

 

 power factor,\cos \phi=\frac{R}{\sqrt{R^{2}+X_{c}^{2}}}

                         =\frac{R}{\sqrt{R^{2}+\left ( \frac{1}{wc} \right )^{2}}}

\cos \phi=\frac{R}{\sqrt{R^{2}+\left ( \frac{1}{2\pi \int c} \right )^{2}}}

\cos \phi=\frac{R}{\sqrt{4+\left ( \frac{1}{2\pi \times 20\times 0.4} \right )^{2}}}

\cos \phi=0.9999\approx 1

\cos \phi=1

Posted by

Rishabh

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