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 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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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 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).
Submit

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

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 - Set 3

Question # 1

When the primary of a transformer is connected to AC mains the current in it increase when secondary circuit is closed.Explain why?

  • Ans 1: When the secondary circuit is closed the output power increase.To produce the power ,transformer will draw large current from the A.C mains to increase its primary power.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4

Question # 1

What happen to the current of a circuit if a load resistance of the circuit is much less than the power transferred?

  • Ans 1: The greater the load the larger the current is supplied by the generator,When the load resistance of the circuit is much less,small current is supplied by the generator.
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15th Chapter

ICS Part 2 Physics Chapter 15 Short Questions Preparation

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