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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
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 1
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 2
Question # 1
What changes are required to turn the D.C motors into a D.C generators?
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Ans 1:
- In order to convert to convert DC motor into SC generator,the magnetic field must be supplied by the permanent magnet and not by electromagnet.
- An arrangement to rotate the coil armature should be provided and battery must be removed.
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.
ICS Part 2 Physics Chapter 15 Short Questions Preparation - Set 4
Question # 1
Can step up transformer increase the power level?
- Ans 1: No,a step up transformer can not increase the power level,in actual transformer,due of dissipation of energy in the coil the output power is always less than input power,Therefore a step up transformer can't increase power level.
