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What is the meaning of the terms frequen...

What is the meaning of the terms frequency of an altrnating current? What is its value in India? Why is an alternating current considered to be advntageous over direct current for long range transmission of electric energy?

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MODERN PUBLICATION-ELECTRICITY-EXERCISE
  1. Find the equivalent resistance between A and B in the following circui...

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  2. Two metallic wires A and B of same material are connected in parallel....

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  3. What is the meaning of the terms frequency of an altrnating current? W...

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  4. Electrical resistivities of some substances at 20^@C are given below: ...

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  5. Electrical resistivities of some substances at 20^@C are given below: ...

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  6. What is electric circuit?

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  7. Calculate the resistance of an electric bulb which allows a 10 A curre...

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  8. A piece of wire having resistance R is cut into four parts. How does t...

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  9. A piece of wire having resistance R is cut into four parts. How does t...

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  10. In an experimenal to study the dependance of current on potential diff...

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  11. Calculate the equivalent resistance between the points A and B in the ...

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  12. Calculate the equivalent resistance of the network across the points A...

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  13. When two resistors of resistance R1 and R2 are connected in parallel, ...

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  14. Three resistors are connected as shown. Through a resistor of 5 ohm, a...

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  15. Three resistors are connected as shown. Through a resistor of 5 ohm, a...

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  16. Three resistors are connected as shown. Through a resistor of 5 ohm, a...

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  17. An electric bulb is rated 220V and 100 W. what is its resistance? Five...

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  18. State the formula correlating the electric current flowing in a conduc...

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  19. A torch bulb is rated 5 V and 500 mA. Calculate its power?

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  20. A torch bulb is rated 5 V and 500 mA. Calculate resistance?

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