1
WB JEE 2024
MCQ (More than One Correct Answer)
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WB JEE 2024 Physics - Alternating Current Question 1 English

The variation of impedance $$\mathrm{Z}$$ of a series $$\mathrm{L C R}$$ circuit with frequency of the source is shown in the figure. Which of the following statement(s) is/are true ?

A
The impedance $$\mathrm{Z}$$ is inductive in the portion $$\mathrm{AC}$$
B
The impedance $$\mathrm{Z}$$ is capacitive in the portion $$\mathrm{BC}$$
C
The impedance $$\mathrm{Z}$$ is inductive in the portion $$\mathrm{BC}$$
D
The impedance $$\mathrm{Z}$$ is capacitive in the portion $$\mathrm{AC}$$
2
WB JEE 2020
MCQ (More than One Correct Answer)
+2
-0
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A 400$$\Omega $$ resistor, a 250 mH inductor and a 2.5 $$\mu $$F capacitor are connected in series with an AC source of peak voltage 5 V and angular frequency 2kHZ. What is the peak value of the electrostatic energy of the capacitor?
A
2$$\mu $$J
B
2.5$$\mu $$J
C
3.33$$\mu $$J
D
5$$\mu $$J
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