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12th Odisha Board
IMPORTANT
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What is the phase difference between the voltage and current in a LCR series circuit at resonance?

Important Questions on Alternating Currents

EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 33
The instantaneous voltage from an AC source is given by E=300 sin314t. What is the RMS voltage of the source?
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 34
What is the average value of AC voltage V=V0 sinωt?
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 35
An electrical element x is connected to an alternating voltage source, has a current through it leading the voltage by π2 rad. Identify x and write an expression for its reactance.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 1
Explain what is RMS value of AC.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 2
Differentiate between RMS value and average value of AC over a cycle.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 3
Write down an equation representing alternating current and explain the symbols used in it.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 4
Show that the average value of AC over a cycle is zero.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 5
Explain the meaning of wattles component of AC.