WB JEE 2021 | Alternating Current Question 2 | Physics

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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

WB JEE 2019

MCQ (Single Correct Answer)

-0.25

When a 60 mH inductor and a resistor are connected in series with an AC voltage source, the voltage leads the current by 60$$^\circ$$. If the inductor is replaced by a 0.5 $$\mu$$F capacitor, the voltage lags behind the current by 30$$^\circ$$. What is the frequency of the AC supply?

$${1 \over {2\pi }} \times {10^4}Hz$$

$${1 \over {\pi }} \times {10^4}Hz$$

$${3 \over {2\pi }} \times {10^4}Hz$$

$${1 \over {2\pi }} \times {10^8}Hz$$

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