MHT CET 2024 11th May Evening Shift | Alternating Current Question 16 | Physics

When 100 V d.c. is applied across a solenoid, a current of 1 A flows in it. When 100 a.c. is applied across it, the current drops to 0.5 A. If the frequency is 50 Hz , the impedance and inductance is

$200 \Omega, \sqrt{3} / \pi \mathrm{H}$

$100 \Omega, \sqrt{3} \mathrm{H}$

$200 \Omega, 1 \mathrm{H}$

$100 \Omega, 1 \mathrm{H}$

MHT CET 2024 11th May Evening Shift

MCQ (Single Correct Answer)

-0

A $1 \mu \mathrm{~F}$ capacitor is charged to 50 V and is then discharged through 10 mH inductor of negligible resistance. The maximum current in the inductor is

0.5 A

1.5 A

1 A

0.15 A

MHT CET 2024 11th May Evening Shift

MCQ (Single Correct Answer)

-0

In LCR resonant circuit, the current and voltage have phase difference

$\frac{\pi}{4}$

$\frac{\pi}{2}$

$-\frac{\pi}{2}$

zero

MHT CET 2024 11th May Morning Shift

MCQ (Single Correct Answer)

-0

An inductance of $\frac{300}{\pi} \mathrm{mH}$, a capacitance of $\frac{1}{\pi} \mathrm{mF}$ and a resistance of $20 \Omega$ are connected in series with an a.c. source of $240 \mathrm{~V}, 50 \mathrm{~Hz}$. The phase angle of the circuit is

$\tan ^{-1}(0)$

$\tan ^{-1}\left(\frac{1}{\sqrt{3}}\right)$

$\tan ^{-1}(1)$

$\tan ^{-1}(\sqrt{3})$

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