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Frequency of A.C. in India is-...

Frequency of A.C. in India is-

A

zero

B

50Hz

C

100 Hz

D

infinity

Text Solution

Verified by Experts

The correct Answer is:
B
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MBD -HARYANA BOARD-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXAMPLE
  1. Frequency of A.C. in India is-

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  2. Why does a compass needle get deflected when brought near a bar magnet...

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  3. Draw magnetic field lines around a bar magnet.

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  4. List the properties of magnetic lines of force.

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  5. Write the characteristics of magnetic field lines. Draw the magnetic f...

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  6. State right hand thumb rule to determine the direction of magnetic fie...

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  7. The magnetic field in a given region is uniform. Draw a diagram to rep...

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  8. Choose the correct option: The magnetic field inside a long straight...

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  9. Which of the following properties of a proton can change while it move...

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  10. In activity shown,how do you think the displacKHOent of rod AB will be...

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  11. In activity shown,how do you think the displacKHOent of rod AB will be...

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  12. In activity shown,how do you think the displacKHOent of rod AB will be...

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  13. A positively charged particle projected towards west is deflected towa...

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  14. State Fleming's left-hand rule.

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

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  16. Explain different ways to induce current in a coil.

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  17. State the principle of an electric generator.

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  18. Name some sources of direct current.

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  19. Which sources produce alternating current?

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  20. Choose the correct option: A rectangular coil of copper wires is rot...

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  21. Name two safety measures commonly used in electric circuits and applia...

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