MHT CET 2023 14th May Evening Shift | Alternating Current Question 55 | Physics

An alternating voltage $$E=200 \sqrt{2} \sin (100 t)$$ volt is connected to a $$1 \mu \mathrm{f}$$ capacitor through an a.c. ammeter. The reading of the ammeter shall

10 mA

20 mA

40 mA

80 ma

MHT CET 2023 14th May Evening Shift

MCQ (Single Correct Answer)

-0

What will be the phase difference between virtual voltage and virtual current when current in the circuit is wattless?

$$60^{\circ}$$

$$45^{\circ}$$

$$90^{\circ}$$

$$180^{\circ}$$

MHT CET 2023 14th May Evening Shift

MCQ (Single Correct Answer)

-0

A coil having an inductance of $$\frac{1}{\pi} \mathrm{H}$$ is connected in series with a resistance of $$300 \Omega$$. If $$20 \mathrm{~V}$$ from a $$200 \mathrm{~Hz}$$ source are impressed across the combination, the value of the phase angle between the voltage and the current is

$$\tan ^{-1}\left(\frac{5}{4}\right)$$

$$\tan _{-1}\left(\frac{4}{5}\right)$$

$$\tan ^{-1}\left(\frac{3}{4}\right)$$

$$\tan ^{-1}\left(\frac{4}{3}\right)$$

MHT CET 2023 14th May Morning Shift

MCQ (Single Correct Answer)

-0

An alternating voltage is applied to a series LCR circuit. If the current leads the voltage by $$45^{\circ}$$, then $$\left(\tan 45^{\circ}=1\right)$$

$$\mathrm{X}_{\mathrm{L}}=\mathrm{X}_{\mathrm{C}}-\mathrm{R}$$

$$\mathrm{X}_{\mathrm{L}}=\mathrm{X}_{\mathrm{C}}+\mathrm{R}$$

$$\mathrm{X}_{\mathrm{C}}=\sqrt{\mathrm{X}_{\mathrm{L}}^2+\mathrm{R}^2}$$

$$\mathrm{X}_{\mathrm{L}}=\sqrt{\mathrm{X}_{\mathrm{C}}^2+\mathrm{R}^2}$$

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