#6 | AC Circuit containing only R
(Physics) > Alternating Current
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Related Practice Questions :

In the circuit given below, the reading of the voltmeter V will be

             

1.  0

2.  100 V

3.  200 V

4.  300 V

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If the current in an AC circuit is given as i=5Asinωt-π3 when an emf e=200Vsinωt is applied across the circuit. The circuit having component only

1.  L and C

2.  L and R

3.  C and R

4.  None of these

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In a LCR series network, VL=40 V, VC=20 V and VR=15 V. The supply voltage is

1.  25V

2.  75V

3.  35V

4.  Zero

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A 220 V, 50 Hz ac source is connected to an inductance of 0.2 H and a resistance of 20 ohms in series. What is the current in the circuit :

1.  10A

2.  5A

3.  33.3A

4.  3.33A

 

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The potential difference V and the current i flowing through an instrument in an ac circuit of frequency f are given by V=5cosωt volts and I = 2 sin ωt amperes (where ω = 2πf). The power dissipated in the instrument is 

(1) Zero

(2) 10 W

(3) 5 W

(4) 2.5 W

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