AIPMT 2012 Prelims | Alternating Current Question 36 | Physics

AIPMT 2012 Prelims

MCQ (Single Correct Answer)

-1

In an electrical circuit R, L, C and a.c. voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and the current in the circuit is If instead, C is removed from the circuit, the phase difference is again. The power factor of the circuit is

$${1 \over 2}$$

$${1 \over {\sqrt 2 }}$$

$${{\sqrt 3 } \over 2}$$

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

The r.m.s. value of potential difference V shown in the figure is

AIPMT 2011 Mains Physics - Alternating Current Question 41 English

$${{{V_0}} \over {\sqrt 3 }}$$

V₀

$${{{V_0}} \over {\sqrt 2 }}$$

$${{{V_0}} \over 2}$$

AIPMT 2011 Mains

MCQ (Single Correct Answer)

-1

A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an ac source, of 200 volt, 100 Hz, is connected across the coil, the current in the coil will be

2.0 A

4.0 A

8.0 A

$${{20} \over {\sqrt {13} }}A$$

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

In the ac circuit an alternating voltage e = $$200\sqrt 2 $$sin100t volts is connected to a capacitor of capacity 1 $$\mu $$F. The r.m.s. value of the current in the circuit is

10 mA

100 mA

200 mA

20 mA

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