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12th Class Physics
Short Questions Preparation
Start Chapter 15 Preparation
12th Class Physics Chapter Wise Preparation
Online Short Questions For Chapter 4 "ICS Part 2 Physics Chapter 15 Short Questions Preparation "
Try The Short Questions For ICS Part 2 Physics Chapter 15 Short Questions Preparation
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Total Questions10
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Available Sets4
Physics - ICS Part 2 Physics Chapter 15 Short Questions Preparation
Question # 1
What is mean by commutator in D.C generator?
- Ans 1: Commutator consists of two split rings or two halves of a single ring.Each half of split ring is connected to each end of the rotating coil,It helps to maintain the output in the same direction by inverting lower halves if sine curve.
ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 1
Question # 1
What is mean by commutator in D.C generator?
- Ans 1: Commutator consists of two split rings or two halves of a single ring.Each half of split ring is connected to each end of the rotating coil,It helps to maintain the output in the same direction by inverting lower halves if sine curve.
ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 2
Question # 1
Define motional emf and write its formula.
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Ans 1: If a conductor moves through a magnetic field then due to change in magnet flux,an emf is induced across the ends of the conductor which is known as motional emf.e=vBL sin theta.
ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 3
Question # 1
In a certain region the earth's magnetic field points vertically down,When a plane flies due north,which wing tip is positively charged?
- Ans 1: When the plane flies due north in the earth magnetic field directed vertical downward,then electron will experience force in east direction,Thus west wingtip of the plane is positively charged.
ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4
Question # 1
Is it possible to change both the area of the loop and magnetic field passing through the loop and still have bo induced emf in the loop?Explain briefly.
- Ans 1: Yes,it the plane of the loop is kept parallel to the direction of the magnetic field magnetic flux through the coil will be zero,no emf will induced in the loop either by changing its area or by changing the magnetic field.
