JEE Main · PhysicsEasy

$What is the power factor of a purely resistive AC circuit?$

A. $0$
B. $0.5$
C. $1$
D. $\infty$

Show correct answer & step-by-step solution

Correct answer: C — $1$

Solution

In a purely resistive circuit, the voltage and current are in phase, meaning the phase angle is 0^{\circ} . Since the power factor is the cosine of the phase angle, cos (0^{\circ}) = 1 .

Attempt this question & track your score

Sign up free to answer, get instant scoring, and let SolveGini track which Physics topics you need to revise.

Attempt & Track Free →

More AC Circuits practice questions

$An alternating current is given by the equation I = 10 sin(314t). What is the frequency of this current in Hertz?$
$In a pure resistive AC circuit, what is the phase difference between the voltage and the current?$
$What is the inductive reactance of an inductor of 0.1 Henry at a frequency of 50 Hertz?$
$T h er oo t m e an s q u a r e v a l u eo f ana l t er na t in g c u r r e n t i sr e l a t e d t o t h e p e ak c u r r e n t I_{0} b y w hi c h f or m u l a ?$
$In a series LCR circuit at resonance, what is the power factor of the circuit?$
$In an LCR series circuit, the resonance frequency is f. If the capacitance is made 4 times its initial value, what will$
$A resistor of 10 ohms and an inductor of 0.1 H are connected in series to a 50 V, 50 Hz AC source. What is the phase ang$
$An AC voltage V = 100 sin(100t) is applied to a capacitor of 1 microfarad. What is the peak current in the circuit?$
$In an AC circuit, the voltage and current are given by V = 100 sin(100t) and I = 100 sin(100t + pi/3). What is the power$
$An AC source with voltage V = V0 sin(omega t) is connected to a series LCR circuit. If the frequency of the source is va$
$In an LCR series circuit, the resonance frequency is f0. If the capacitor is replaced by two capacitors of the same capa$
$A series LCR circuit is connected to an AC voltage source. At resonance, the voltage across the inductor is 100V. If the$

View all AC Circuits questions →

What is the power factor of a purely resistive AC circuit? — JEE Main Physics Question with Solution | SolveGini