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12th ICSE
IMPORTANT
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What is meant by wattless current?

Important Questions on Alternating Current

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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 17

What is the average power dissipated in

(1) purely inductive,

 

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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 17

What is the average power dissipated in

(ii) purely capacitive AC circuits?

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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 18
An alternating current of frequency f is flowing through an ideal choke coil of self inductance L. If V0 I0 be the peak values of the voltage and current, find the average power consumed, if any, by the choke coil.  
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 19
Is there any device by which DC can be controlled without any loss of energy? Can choke coil do so?
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 20
Why is an inductance more appropriate resistance to decrease alternating current?
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 22
Do we require AC or DC for long-distance transmission?
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 23
Why is AC more dangerous than DC of the same voltage?
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 12 - Alternating Current>QUESTIONS>Q 24
The domestic electric supply is 200 V-50 Hz. What the rms and peak values of the voltage?