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

Name four methods to produce induce emf.

  • Ans 1: An induce emf is produced in the loop if the magnetic flux through it changes.The methods to produce induced emf are:
    1. A bar magnet is moved towards the coil.
    2. By changing the area of the coil in a constant magnetic field.
    3. A coil of constant area is rotated in a constant magnetic field,
    4. The coil is placed in the magnetic field of an electromagnet.

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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

Name four methods to produce induce emf.

  • Ans 1: An induce emf is produced in the loop if the magnetic flux through it changes.The methods to produce induced emf are:
    1. A bar magnet is moved towards the coil.
    2. By changing the area of the coil in a constant magnetic field.
    3. A coil of constant area is rotated in a constant magnetic field,
    4. The coil is placed in the magnetic field of an electromagnet.

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

Question # 1

How can the power losses be minimized in a transformer?

  • Ans 1: The power can be minimized in transformer by implementing following considerations.
    1. Core should be assembled from the laminated sheet of a material whose hysteresis loop are is very small.
    2. The insulation between lamination sheets should be perfect so as to stop the flow of eddy current.
    3. The resistance of the primary and secondary coils should be kept minimum.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 3

Question # 1

What is mean by commutator in D.C generator?

  • Ans 1: Commutator consists of two split rings or two halves of a single ring.Each half of split ring is connected to each end of the rotating coil,It helps to maintain the output in the same direction by inverting lower halves if sine curve.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4

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

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