ICS Part 2 Physics Chapter 13 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

Why does the resistance of a conductor rise with a temperature?

  • Ans 1: As the temperature of the conductor rises,the amplitude of vibration of atoms increase and hence the probability of their collision with free electrons also increases which results in increase of resistance of conductor.
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Prepare Complete Set Wise Questions For Chapter 2 "ICS Part 2 Physics Chapter 13 Short Questions Preparation "

ICS Part 2 Physics Chapter 13 Short Questions Preparation - Set 1

Question # 1

Why does the resistance of a conductor rise with a temperature?

  • Ans 1: As the temperature of the conductor rises,the amplitude of vibration of atoms increase and hence the probability of their collision with free electrons also increases which results in increase of resistance of conductor.
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ICS Part 2 Physics Chapter 13 Short Questions Preparation - Set 2

Question # 1

A voltmeter can not read the exact EMF of the cell.Why?

  • Ans 1: When a voltmeter is connected across a cell,it will draw some current from the cell and small potential drop takes place due current flowing through the internal resistance of the cell.As a result the actual emf of the cell decrease and the voltmeter cannot read exact value.
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ICS Part 2 Physics Chapter 13 Short Questions Preparation - Set 3

Question # 1

What is thermistor? Gives its two applications.

  • Ans 1: Thermistors are heat sensitive resistors.Thermistors with positive temperature coefficient of resistance as well as negative temperature coefficient of resistance are available.They are used for accurate measuring of temperature up to 10K.They are used as temperature sensors.
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ICS Part 2 Physics Chapter 13 Short Questions Preparation