1
NEET 2020 Phase 1
+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
2
NEET 2020 Phase 1
+4
-1
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is $${\pi \over 3}$$. If instead C is removed from the circuit, the phase difference is again $${\pi \over 3}$$ between current and voltage. The power factor of the circuit is :
A
0.5
B
1.0
C
$$-$$ 1.0
D
zero
3
NEET 2018
+4
-1
The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance
A
0.138 H
B
138.88 H
C
1.389 H
D
13.89 H
4
NEET 2018
+4
-1
An inductor 20 mH, a capacitor 100 $$\mu$$F and a resistor 50 $$\Omega$$ are connected in series across a source of emf, V = 10 sin 314 t. The power loss in the circuit is
A
0.79 W
B
0.43 W
C
2.74 W
D
1.13 W
EXAM MAP
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