Explain what is RMS value of AC.

Important Questions on Alternating Currents

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.

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 6

Why is a choke coil used in an AC circuit but not a resistor?

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 7

Explain what are iron and copper losses in a transformer.

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 8

Differentiate between step-up and step-down transformers.

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 10 - Alternating Currents>MODEL QUESTIONS>Q 9

Why is AC used widely though it is more dangerous than DC?