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What is the effect on resistance, if the...

What is the effect on resistance, if the area of cross section is increased.

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MBD-ELECTRICITY-EXAMPLE
  1. Give reasons for the following : Resistivity of some materials if decr...

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  2. What is the effect on resistance, if the length of wire is increased

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  3. What is the effect on resistance, if the area of cross section is incr...

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  4. Current of 100 mA flows through the filament of an electric bulb for 3...

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  5. 60 coulomb of charge flows through a circuit for 5 minutes. Calculate ...

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  6. Calculate the area of cross section of wire whose length is 1.0 m and ...

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  7. Resistance of a metal of length 1 m is 26 Omegaat 20^@C If the diamete...

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  8. In an electric circuit, a battery of five cells each of 2 v, resistors...

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  9. An electric lamp,whose resistance is 20Omega and a conductor of 4Omega...

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  10. 98 J of heat is produced each second in 2 Omega resistor.Find the pote...

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  11. What is the (a) highest :(b) lowest total resistance that can be secur...

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  12. An electric bulb of power 40 W is lighted daily for 8 hours for 15 day...

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  13. A household uses the following electric appliance: Refrigerator of rat...

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  14. A household uses the following electric appliance: Two electric fans o...

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  15. An electric motor takes 5A form a 220 V line. Determine the power of t...

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  16. Define energy.

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  17. Define electric energy

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  18. Define electric current and give its unit

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  19. Define a volt and whose unit is this?

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  20. What is Potential difference ?Give SI unit.

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