Online Preparation of Physics Chapter 15 For 12th Class Fsc

Online Short Questions For Chapter 4 "12th Class Physics Chapter 4 Short Questions Preparation "

Try The Short Questions For 12th Class Physics Chapter 4 Short Questions Preparation

  • Total Questions10

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Physics - 12th Class Physics Chapter 4 Short Questions Preparation

Question # 1

In a transformer there is no transfer of charge from the primary to the secondary.How is then the power transferred?

  • Ans 1: The power will be transferred because the two coils of transformer are magnetically linked i.e, the change of flux through one coil is linked with the other coil.
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Prepare Complete Set Wise Questions For Chapter 4 "12th Class Physics Chapter 4 Short Questions Preparation "

12th Class Physics Chapter 4 Short Questions Preparation - Set 1

Question # 1

In a transformer there is no transfer of charge from the primary to the secondary.How is then the power transferred?

  • Ans 1: The power will be transferred because the two coils of transformer are magnetically linked i.e, the change of flux through one coil is linked with the other coil.
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12th Class Physics Chapter 4 Short Questions Preparation - Set 2

Question # 1

Define electromagnetic induction.

  • Ans 1: When a conductor is moved through a magnetic field,the electric current flow through the circuit,The emf produced in the conductor is called induced emf,and the current generated is called induced current.This phenomena is known as electromagnetic induction.
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12th Class Physics Chapter 4 Short Questions Preparation - Set 3

Question # 1

How the power is lost due to eddy current in a transformer and how this loss can be minimized?

  • Ans 1: The induced currents that are set up in the core of transformer in the direction perpendicular to the flux are known as eddy currents,It results in power dissipation and heating of the coral material.The insulation between lamination sheets should be perfect so as to stop the flow of eddy currents.
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12th Class Physics Chapter 4 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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Physics
15th Chapter

12th Class Physics Ch 15 Preparation

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