WB JEE 2022 | Alternating Current Question 1 | Physics

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

When an AC source of emf E with frequency $$\omega$$ = 100 Hz is connected across a circuit, the phase difference between E and current I in the circuit is observed to be $${\pi \over 4}$$ as shown in the figure. If the circuit consist of only RC or RL in series, then

WB JEE 2022 Physics - Alternating Current Question 1 English

R = 1 k$$\Omega$$, C = 5 $$\mu$$F

R = 1 k$$\Omega$$, L = 10 H

R = 1 k$$\Omega$$, L = 1 H

R = 1 k$$\Omega$$, C = 10 $$\mu$$F

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

WB JEE 2021 Physics - Alternating Current Question 3 English

The rms value of potential difference V shown in the figure is

$${{{V_0}} \over 2}$$

V₀

$${{{V_0}} \over {\sqrt 3 }}$$

$${{{V_0}} \over {\sqrt 2 }}$$

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

WB JEE 2021 Physics - Alternating Current Question 2 English

Consider a pure inductive AC circuit as shown in the figure. If the average power consumed is P, then

P > 0

P < 0

P = 0

P এর মান অসীম

WB JEE 2020

MCQ (Single Correct Answer)

-0.25

WB JEE 2020 Physics - Alternating Current Question 9 English

When a DC voltage is applied at the two ends of a circuit kept in a closed box, it is observed that the current gradually increases from zero to a certain value and then remains constant. What do you think that the circuit contains?

A resistor alone

A capacitor alone

A resistor and an inductor in series

A resistor and a capacitor in series

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