1
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25

Consider a pure inductive AC circuit as shown in the figure. If the average power consumed is P, then
A
P > 0
B
P < 0
C
P = 0
D
P এর মান অসীম
2
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25

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
A resistor alone
B
A capacitor alone
C
A resistor and an inductor in series
D
A resistor and a capacitor in series
3
WB JEE 2019
MCQ (Single Correct Answer)
+1
-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?
A
$${1 \over {2\pi }} \times {10^4}Hz$$
B
$${1 \over {\pi }} \times {10^4}Hz$$
C
$${3 \over {2\pi }} \times {10^4}Hz$$
D
$${1 \over {2\pi }} \times {10^8}Hz$$
4
WB JEE 2019
MCQ (Single Correct Answer)
+2
-0.5
A parallel plate capacitor in series with a resistance of 100$$\Omega$$, an inductor of 20 mH and an AC voltage source of variable frequency shows resonance at a frequency of $${{1250} \over \pi }$$ Hz. If this capacitor is charged by a DC voltage source to a voltage 25 V, what amount of charge will be stored in each plate of the capacitor?
A
0.2 $$\mu$$C
B
2 mC
C
0.2 mC
D
0.2 C
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
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Calculus
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