Electromagnetic Induction & Alternating Currents (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 103  106 of 124
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Question number: 103
» Electromagnetic Induction & Alternating Currents » LCR Series Circuit
Question
An ac source is connected to a resistive circuits. Which of the following statements are false?
(1) Current leadsthe voltage
(2) Current lags behind the voltage
(3) Any of (1) or (2) may be true depending upon the value of resistance
(4) Current and voltage are in same phase
Select the correct answers and mark it according to the following codes:
Codes:
Choices
Choice (4)  Response  

a.  2 and 4 are correct 

b.  1 and 3 are correct 

c.  1, 2 and 3 are correct 

d.  1 and 2 are correct 

Question number: 104
» Electromagnetic Induction & Alternating Currents » Power in AC Circuits
Question
An alternating e. m. f. of angular frequency is applied across an inductance. The instantaneous power developed in the circuit has an angular frequency
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 105
» Electromagnetic Induction & Alternating Currents » Power in AC Circuits
Question
An ac supply gives 30 V, rms which passes through a 10 Ω resistance. The power dissipated in it is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 106
» Electromagnetic Induction & Alternating Currents » LCR Series Circuit
Question
An alternating current source of frequency 100 Hz is joined to a combination of a resistance, a capacitance and a inductance in series. The potential difference across the inductance, the resistance and the capacitor is 46, 8 and 40 volt respectively. The electromotive force of alternating current source in volt is
Choices
Choice (4)  Response  

a.  94 

b.  14 

c.  76 

d.  10 
