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MBD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
- List some such electric applicances in which electric motor is used.
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- What is electric fuse ?Why is its important?
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- Why the fuse wire should have high resistance and low melting point?
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- What is meant by over-loading?
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- When does an electric short circuit occur?
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- What are hazards of electricity?
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- What is a dynamo?
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- On what principle is a.c.motor based?
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- What is an electric motor?
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- List three sources of magnetic field.
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- Name the physical qanitity whose S.I. unit is weber/m^2.
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- In which part of a bar magnet,The magnetic field lines are more denser...
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- How does the strength of the magnetic field at the centre of a circula...
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- Name any two devices which uses electric motor as an essential compone...
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- Define an elelctromagnet
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- Define magnetic pole.
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- Name two electric devices which act on magnetic effect of electric cur...
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- What is electric fuse?Why is its important?
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- Which electrical phenomenon is responsible for deflection of galvonome...
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- The direction of magnetic field produced on passing electric current i...
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