ICS Part 2 Physics Chapter 15 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Online Short Questions For Chapter 4 "ICS Part 2 Physics Chapter 15 Short Questions Preparation "

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Physics - ICS Part 2 Physics Chapter 15 Short Questions Preparation

Question # 1

Is it possible to change both the area of the loop and magnetic field passing through the loop and still have bo induced emf in the loop?Explain briefly.

  • Ans 1: Yes,it the plane of the loop is kept parallel to the direction of the magnetic field magnetic flux through the coil will be zero,no emf will induced in the loop either by changing its area or by changing the magnetic field.
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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

Is it possible to change both the area of the loop and magnetic field passing through the loop and still have bo induced emf in the loop?Explain briefly.

  • Ans 1: Yes,it the plane of the loop is kept parallel to the direction of the magnetic field magnetic flux through the coil will be zero,no emf will induced in the loop either by changing its area or by changing the magnetic field.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 2

Question # 1

Define induced emf and induced current.

  • Ans 1: If a conductor moves through a magnetic field then due to change in magnetic flux,an emf is induced across the ends of the conductor which is known as back emf.If the circuit is close it will cause an electric current which is called as induced current.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 3

Question # 1

What is back emf in motors?

  • Ans 1: When to coil motor rotates across the magnetic field by the applied potential difference V,an emf is induced in it.The induced emf is in such a direction that opposes the emf running motor.Due to this reasons,the induced emf is called back emf of the motor.The magnitude of the back emf increase with the speed of motor.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4

Question # 1

What changes are required to turn the D.C motor into D.C generators?

  • Ans 1:
    1. In order to convert DC motor into DC generator the magnetic field must be supplied by the permanent magnet and not by electromagnet.
    2. An arrangement to rotate the coil armature should be provided and battery must be removed.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation

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