AP EAPCET 2024 - 22th May Morning Shift | Alternating Current Question 2 | Physics

A 50 Hz AC circuit has a 10 mH inductor and a $2 \Omega$ resistor in series. The value of capacitance to be placed in series in the circuit to make the circuit power factor as unity is

$1.014 \times 10^{-6} \mathrm{~F}$

$1.014 \times 10^{-3} \mathrm{~F}$

$2.6 \times 10^{-3} \mathrm{~F}$

$4.125 \times 10^{-3} \mathrm{~F}$

AP EAPCET 2024 - 21th May Evening Shift

MCQ (Single Correct Answer)

-0

A resistor of resistance $R$, inductor of inductive reactance $2 R$ and a capacitor of capacitive reactance $X_C$ are connected in series to an AC source.If the series $L-C-R$ circuit is in resonance, then the power factor of the circuit and the value, $X_C$ are respectively

0.5 and $4 R$

1 and $2 R$

0.5 and $2 R$

1 and $4 R$

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

An inductor and a resistor are connected in series to an AC source of voltage $144 \sin \left(100 \pi t+\frac{\pi}{2}\right) \mathrm{V}$. If the current in the circuit is $6 \sin \left(100 \pi t+\frac{\pi}{6}\right) \mathrm{A}$, then the resistance of the resistor is

$24 \Omega$

$36 \Omega$

$12 \Omega$

$18 \Omega$

AP EAPCET 2024 - 20th May Morning Shift

MCQ (Single Correct Answer)

-0

A resistance of $20 \Omega$ is connected to a source of an alternating potential $V=200 \sin (10 \pi t)$. If $t$ is the time taken by the current to change from the peak value to rms value, then $t$ is (in seconds)

$25 \times 10^{-1}$

$2.5 \times 10^{-4}$

$25 \times 10^{-2}$

$2.5 \times 10^{-2}$

PREVIOUS NEXT

AP EAPCET Subjects