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Name some devices in which electric moto...

Name some devices in which electric motors are used.

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MBD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
  1. Imagine that you are sitting in a chamber with your back to one wall a...

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  2. What is the role of the split ring in an electric motor?

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  3. Name some devices in which electric motors are used.

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  4. A coil of insulated copper wire is connected to a galvanometer, what w...

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  5. A coil of insulated copper wire is connected to a galvanometer, what w...

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  6. A coil of insulated copper wire is connected to a galvanometer what wi...

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  7. Two circular coils A and B placed closed to each other.If the current ...

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  8. When does an electric short circuit occur?

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  9. What is the function of earth wire? Why is it necessary to earth metal...

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  10. State two properties of magnetic field lines.

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  11. Given magnetic field due to solenoid on what factors the strength of t...

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  12. What is solenoid? How does a solenoid behave like a bar magnet?

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  13. What is an electromagnet? Upon what factors its strength depends?

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  14. Explain principal,construction and working of D.C.generator.

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  15. Arrange an activity to show that current is produced due to change in ...

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  16. What are essential precautions to be used while using electricity?

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  17. What are magnetic filed lines? How can the magnetic lines of force due...

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  18. How will you prove that current flowing through a copper wire produces...

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  19. What do you understand by magnetic effect of current? To understand th...

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  20. Write important properties of magnetic lines of force?

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