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MBD -HARYANA BOARD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
- In the figure which law is shown?lablel 1 and 2 in relation to the law...
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- Name the law shown in the figure lable 1 and 2 according to this law.
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- In the alongside figure a straight conductor B is carrying current in ...
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- In the alongside figure a straight conductor B is carrying current in ...
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- What is electro-magnetic induction?
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- List some such electric applicances in which electric motor is used.
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- What is electric fuse?What is its imnportant?
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- Why the fuse wire should have high resistance and low metling 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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- A dynamo
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- On what principle is a.c.motor based?
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- What is electric motor ?
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- List three sources of magnetic fields.
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- Name the physical qanitity whose S.I. unit is weber/m^2.
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- Inside a bar magnetic the magnetic field lines
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- Name some devices in which electric motors are used.
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- Define an elelctromagnet
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- Define the following terms. Magnetic South Pole
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