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ICSE-MAGNETISM -EXERCISE-10(B)
- What is an electromagnet ?
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- Name the material used for preparing an electromagnet.
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- How is an electromagnet made ? Name two factors on which the strength ...
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- You are required to make an electromagnet from a soft iron bar by usin...
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- You are required to make an electromagnet from a soft iron bar by usin...
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- Fig. shows a coil wound around a soft iron bar XY. State the po...
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- Fig. shows a coil wound around a soft iron bar XY. Suggest one w...
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- A coil of insulated copper wire is wound around a piece of soft iron a...
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- Show with the aid of a diagram how a wire is wound on a U-shaped piece...
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- State two ways by which the strength of magnetic field of an electroma...
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- Name a common device that uses electro magnets.
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- State two advantages of an electromagnet over a permanent magnet.
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- State two differences between an electromagnet and a permanent magnet.
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- Why is soft iron used as the core of the electromagnet in an electric ...
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- How is the working of an electric bell affected, if alternating curren...
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- Name the material used for making the armature of an electric bell. Gi...
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