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Physics · PYQ NEET UG 2016(2)
हिन्दीThe potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an L-C-R circuit. The power factor of this circuit is
Correct answer · Option 4
0.8
Explanation
Power factor \( \cos\phi = \frac{V_R}{V} = \frac{V_R}{\sqrt{V_R^2 + (V_L - V_C)^2}} = \frac{80}{\sqrt{80^2 + (100 - 40)^2}} = \frac{80}{\sqrt{6400 + 3600}} = \frac{80}{100} = 0.8 \).
