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

State Faraday's law of electromagnetic induction.

  • Ans 1: It states that
    "The average emf induced in a conducting coil of N loops is equal to the negative of the rate at which the magnetic flux through the coil is changing with time".
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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

State Faraday's law of electromagnetic induction.

  • Ans 1: It states that
    "The average emf induced in a conducting coil of N loops is equal to the negative of the rate at which the magnetic flux through the coil is changing with time".
Submit

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

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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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 3

Question # 1

Write two similarities and two difference between motor and generator.

  • Ans 1: Similarities:
    1. Construction of a motor is similar to a generator.
    2. In both,magnetic field is provided by an electromagnet.
    Differences:
    1. Generators convert mechanical energy into electrical energy while motor converts electrical energy into mechanical energy.
    2. In generator,the armature coil is rotated in the magnetic field and the current is the output.While in motor,armature is connected to battery,which rotated the armature.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4

Question # 1

Does the induced emf always act to decrease the magnetic flux through a circuit?

  • Ans 1: No.the induced emf always oppose the cause that produce it.If the magnetic flux through the circuit is increasing then induced emf acts to decrease the magnetic flux.
    it the magnetic flux through the circuit is decreasing,then induced emf acts to increase the magnetic flux.
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ICS Part 2 Physics Chapter 15 Short Questions Preparation

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