ICS Part 2 Physics Chapter 15 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 15 Short Questions Preparation

Question # 1

Define self induction and mutual induction.

  • Ans 1: The phenomena in which changing current in a coil induced a emf in itself is called self-induction.
    The phenomena in which changing current in one coil induces an emf in another coil is called mutual induction.
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Prepare Complete Set Wise Questions For Chapter 4 "ICS Part 2 Physics Chapter 15 Short Questions Preparation "

ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 1

Question # 1

Define self induction and mutual induction.

  • Ans 1: The phenomena in which changing current in a coil induced a emf in itself is called self-induction.
    The phenomena in which changing current in one coil induces an emf in another coil is called mutual induction.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 2

Question # 1

A suspended magnet is oscillating freely in the horizontal plane.The oscillation are strongly damped when a metal plate is placed under,The magnet.Explain why its occurs.

  • Ans 1: The oscillating magnet produces change of magnetic flux close to it.The metal plate placed below it experiences the change the magnetic flux,As the result eddy currents are produced inside the metal.According to Lenz's law these eddy currents oppose the cause which produce it,So the oscillation of magnet are strongly damped.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 3

Question # 1

What is meant by back emf?Write its SI units.

  • Ans 1: The emf induced across the ends of a coil due to the changing current in the same coil is called self induced emf or back emf.Its SI unit is Volt(V).
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4

Question # 1

State the Lenz's law and define Henry.

  • Ans 1: Lenz's Law: It states that the direction of induced current is always so as to opposite the change which cause the current.
    Henry: If the current in the primary is changing at the rate of one ampere per second and the emf induced across the ends of the secondary coil is one volt then the mutual inductance is called one henry.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation

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