MHT CET 2026 20th April Morning Shift | Alternating Current Question 5 | Physics

In a series LCR circuit, the voltage across R is $100$ V, $R = 1\,\text{K}\,\Omega$ and $C = 2\,\mu\text{F}$. The angular frequency $\omega$ is $200$ rad s$^{-1}$. At resonance, the voltage across '$L$' is

$150$ V

$200$ V

$250$ V

$300$ V

MHT CET 2026 20th April Morning Shift

MCQ (Single Correct Answer)

-0

Which graph shows the correct variation of r.m.s. current '$i$' with frequency '$f$' of a.c. in case of series resonant circuit ?

$(R)$

$(P)$

$(S)$

$(Q)$

MHT CET 2026 20th April Morning Shift

MCQ (Single Correct Answer)

-0

When an inductance '$L$' and resistor '$R$' are connected in series to $25$V, $50$ Hz supply, a current of $0.5$ A flows in the circuit. The current lags behind in phase from applied voltage by $\left(\dfrac{\pi}{3}\right)$ radian. The value of R is $\left(\cos 60^\circ = \dfrac{1}{2}\right)$

$20\,\Omega$

$25\,\Omega$

$40\,\Omega$

$50\,\Omega$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

In an LC circuit, angular frequency at resonance is $\omega$. The new angular frequency when inductance is made four times and capacitance is made eight times is

$\frac{\omega}{2 \sqrt{2}}$

$\frac{\omega}{4 \sqrt{2}}$

$\frac{\omega}{4}$

$\frac{\omega}{\sqrt{2}}$

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