MHT CET 2024 10th May Morning Shift | Alternating Current Question 28 | Physics

The inductive reactance of a coil is ' $R$ ' $\Omega$. If inductance of a coil is tripled and frequency of a.c supply is also tripled, then new inductive reactance will be

$\frac{\mathrm{R}}{9}$

$\frac{\mathrm{R}}{3}$

$\mathrm{3 R}$

$\mathrm{9 R}$

MHT CET 2024 9th May Evening Shift

MCQ (Single Correct Answer)

-0

An e.m.f. $E=E_0 \cos \omega t$ is applied to circuit containing L and R in series. If $\mathrm{X}_{\mathrm{L}}=2 \mathrm{R}$, then the power dissipated in the circuit is

$\frac{\mathrm{E}_0{ }^2}{12 \mathrm{R}}$

$\frac{\mathrm{E}_0{ }^2}{10 \mathrm{R}}$

$\frac{\mathrm{E}_0{ }^2}{8 \mathrm{R}}$

$\frac{\mathrm{E}_0{ }^2}{6 \mathrm{R}}$

MHT CET 2024 9th May Evening Shift

MCQ (Single Correct Answer)

-0

When a capacitor is connected in series LR circuit, the alternating current flowing in the circuit

is zero.

remains constant.

increases.

decreases.

MHT CET 2024 9th May Morning Shift

MCQ (Single Correct Answer)

-0

Average power associated with an ideal inductor and ideal capacitor over a complete cycle of a.c. is respectively

zero, one

one, zero

zero, zero

one, one

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