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If the diameter of a resistance wire is ...

If the diameter of a resistance wire is halved, then its resistance becomes:

A

four times

B

half

C

one-fourth

D

two times

Text Solution

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The correct Answer is:
A
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. When the diameter of a wire is doubled, its resistance becomes:

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  2. If the resistance of a certain copper wire is 1Omega, then the resista...

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  3. If the diameter of a resistance wire is halved, then its resistance be...

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  4. The resistivity of a certain material is 0.6 Omegam. The material is m...

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  5. When the area of cross-section of a conductor is doubled, its resistan...

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  6. The resistivity of copper metal depends on only one of the following f...

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  7. If the area of cross-section of a resistance wire is halved, then its ...

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  8. A piece of wire of resistance 20 Omega is drawn so that its length is ...

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  9. The electrical resistivities of three materials P,Q and R are given be...

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  10. The electrical resistivities of four materials A,B,C and D are given b...

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  11. The electrical resistivities of five substances A,B,C,D and E are give...

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  12. SERIES COMBINATION

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  13. If five resistances, each of value 0.2 ohm, are connected in series, w...

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  14. State Ohm's law. Derive an expression for the equivalent resistance of...

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  15. If 3 resistances of 3 ohm each are connected in parallel, what will be...

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  16. How should the two resistances of 2 ohms each be connected so as to pr...

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  17. Two resistances X and Y are connected turn by turn: (i) in parallel, a...

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  18. What possible values of resultant resistance one can get by combining ...

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  19. Show how you would connect two 4 ohm resistors to produce acombined r...

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  20. Which of the following resistor arrangement, A or B, has the lower com...

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