12th Class Fsc Physics Online Preparation

Online Short Questions For Chapter 3 "12th Class Physics Chapter 3 Short Questions Preparation "

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Physics - 12th Class Physics Chapter 3 Short Questions Preparation

Question # 1

On what factors the induced currents due to motional emf depend.

  • Ans 1: The current can be increased by the following factors :
    1. Using a stronger magnetic field
    2. Moving the loop faster
    3. Replacing the loop with a coil of many turns
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Prepare Complete Set Wise Questions For Chapter 3 "12th Class Physics Chapter 3 Short Questions Preparation "

12th Class Physics Chapter 3 Short Questions Preparation - Set 1

Question # 1

On what factors the induced currents due to motional emf depend.

  • Ans 1: The current can be increased by the following factors :
    1. Using a stronger magnetic field
    2. Moving the loop faster
    3. Replacing the loop with a coil of many turns
Submit

12th Class Physics Chapter 3 Short Questions Preparation - Set 2

Question # 1

Define electromagnetism and give the name of one device in which electromagnetism is used.

  • Ans 1: The branch of physics which deals with electricity and magnetism and the interaction between them is known as electromagnetism.
    Electromagnetism is used in doorbells,electric motors such as electric fan etc.
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12th Class Physics Chapter 3 Short Questions Preparation - Set 3

Question # 1

What is lamp and scale arrangement in galvanometer?

  • Ans 1: In sensitive galvanometer,the angle of deflection is observed by means of a small mirror attached to the coil along with the lamp and scale.A beam of light directed towards the mirror of galvanometer.After reflection it produce a spot on the screen.The scale provides the small angle of deflection.
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12th Class Physics Chapter 3 Short Questions Preparation - Set 4

Question # 1

What is the function of grid in cathode ray oscilloscope?

  • Ans 1: Grid is a negative potential relative to cathode.It controls the number of electrons reaching the screen and thus controls the brightness of spot on the screen.
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Physics
14th Chapter

12th Class Physics Ch 14 Preparation

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