AP EAPCET 2025 - 21st May Evening Shift | Alternating Current Question 9 | Physics

In an LCR series circuit, if the potential differences across inductor, capacitor and resistor are $60 \mathrm{~V}, 30 \mathrm{~V}$ and 40 V respectively, then the AC voltage applied to the circuit is

50 V

70 V

130 V

60 V

AP EAPCET 2025 - 21st May Morning Shift

MCQ (Single Correct Answer)

-0

The resonant frequency of an LC circuit is $f_0$. If a dielectric slab of constant 16 is inserted completely between the plates of the capacitor, then the resonant frequency is

$\frac{f}{2}$

$\frac{6}{4}$

$4 f$

AP EAPCET 2024 - 23th May Morning Shift

MCQ (Single Correct Answer)

-0

An alternating current is given by $i=(3 \sin \omega t+4 \cos \omega t) \mathrm{A}$. The rms current will be

$\frac{7}{\sqrt{2}} \mathrm{~A}$

$\frac{1}{\sqrt{2}} \mathrm{~A}$

$\frac{5}{\sqrt{2}} \mathrm{~A}$

$\frac{3}{\sqrt{2}} \mathrm{~A}$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

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

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

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

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

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

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