ICS Part 2 Physics Chapter 15 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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12th Class Physics Chapter Wise Preparation

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

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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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

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.
Submit

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

Question # 1

Define the SI unit of mutual inductance.

  • Ans 1: If current is changing at the rate of one ampere per second and the emf induced across the ends of the coil is one volt then inductance is called one Henry.Its SI units are VsA-1.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 3

Question # 1

How does Lenz's law explain law of conservation of energy phenomena of electromagnetism induction?

  • Ans 1: When a rod is moving in the magnetic field towards right,an induced current flows through the loop in anticlockwise direction,Since current carrying rod experience a magnetic force opposite to that velociety.An external force equal in magnitude and opposite in direction must be applied to keep the rod moving with constant velocity.This dragging force provides the energy for the induced current to flow,This energy is the source of induced current.Thus electromagnetic induction is exactly according to law of conservation of energy.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4

Question # 1

Distinguished between AC generator and transformer.

  • Ans 1: AC generator: AC generator is a device which produce AC voltage by converting mechanical energy into electrical energy.
  • Ans 2: Transformer: It is and electrical device which acts to change a given alternating emf into larger or smallar AC voltage.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation

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