1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A capacitor of capacitance 'C', is connected across an ac source of voltage V, given by

V = V0sin$$\omega$$t

The displacement current between the plates of the capacitor, would then be given by :
A
$${I_d} = {V_0}\omega C\sin \omega t$$
B
$${I_d} = {V_0}\omega C\cos \omega t$$
C
$${I_d} = {{{V_0}} \over {\omega C}}\cos \omega t$$
D
$${I_d} = {{{V_0}} \over {\omega C}}\sin \omega t$$
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit ?
A
4A
B
0.2A
C
0.4A
D
2A
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A series LCR circuit containing 5.0 H inductor, 80$$\mu$$F capacitor and 40$$\Omega$$ resistor is connected to 230V variable frequency ac source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be :
A
42 rad/s and 58 rad/s
B
25 rad/s and 75 rad/s
C
50 rad/s and 25 rad/s
D
46 rad/s and 54 rad/s
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
A 40 $$\mu $$F capacitor is connected to a 200 V. 50 Hz ac supply. The rms value of the current on the circuit is, nearly :
A
2.05 A
B
2.5 A
C
25.1 A
D
1.7 A
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