A series L-R circuit connected to an AC source E = 25 sin(1000t)… | JEE Main 2024 Physics PYQ

MCQMediumJEE Main 2024 · 30 January, Shift 1LCR Circuits & Resonance

A series $L-R$ circuit connected to an AC source $E = 25 \sin(1000t) \, \text{V}$ has a power factor of $\frac{1}{\sqrt{2}}$ . If the source of emf is changed to $E = 20 \sin(2000t) \, \text{V}$ , the new power factor of the circuit will be:

A
$\frac{1}{\sqrt{2}}$
B
$\frac{1}{\sqrt{3}}$
C
$\frac{1}{\sqrt{5}}$
D
$\frac{1}{\sqrt{7}}$

Answer & step-by-step solution

Practice more LCR Circuits & Resonance questions

Get unlimited AI-adaptive practice, mastery tracking, and an AI tutor that explains every step - free to start.

Start free trial More on LCR Circuits & Resonance

Answer & step-by-step solution

Practice more LCR Circuits & Resonance questions

Related questions