TG EAPCET 2025 (Online) 3rd May Morning Shift | Alternating Current Question 3 | Physics

An electric bulb, an open coil inductor, an AC source and a key are all connected in series to form a closed circuit. They key is closed and after some time an iron rod is inserted into the interior of the inductor, then

the glow of the bulb increases.

the glow of the bulb remains unchanged.

the glow of the bulb decreases.

the bulb does not glow.

TG EAPCET 2025 (Online) 2nd May Evening Shift

MCQ (Single Correct Answer)

-0

An inductor and a resistor are connected in series to an AC supply. If the potential difference across the inductor and the resistor are 180 V and 240 V respectively, then the voltage of the AC supply is

300 V

420 V

60 V

210 V

TG EAPCET 2025 (Online) 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

The frequency of an alternating voltage is 50 Hz . The time taken for instantaneous voltage to increase from zero to half of its peak voltage is

$\frac{1}{800} \mathrm{~s}$

$\frac{1}{600} \mathrm{~s}$

$\frac{1}{300} \mathrm{~s}$

$\frac{1}{200} \mathrm{~s}$

TG EAPCET 2024 (Online) 11th May Morning Shift

MCQ (Single Correct Answer)

-0

A capacitor and a resistor are connected in series to an AC source. If the ratio of the capacitive reactance of the capacitor and the resistance of the resistor is $4: 3$, then the power factor of the circuit is

0.3

0.8

0.6

0.5

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