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A wire of resistance 18 ohm is drawn unt...

A wire of resistance 18 ohm is drawn until its radius reduces `1//2^(th)` of its original radius then resistance of the wire is

A

`188Omega`

B

`72Omega`

C

`288Omega`

D

`388Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - II
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  2. If a copper wire is stretched to increase its length by 0.1%. Then per...

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  3. A wire of resistance 18 ohm is drawn until its radius reduces 1//2^(th...

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  4. If an iron wire is drawn to decrease its radius by 0.5 %. Then percent...

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  5. A conducting liquid is filled in a vessel of area of cross section A u...

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  6. A network of resistore is connected to a 16 V battery with internal re...

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  7. A wire of resistance 'R' is cut into four equal parts and they are bun...

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  8. A wire of resistance 18 ohm is bent to form an equilateral triangle. T...

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  9. Four conductors of resistance 16Omega each are connected to form a squ...

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  10. A piece of wire of resistance 4Omega is bent through 180^(@) at its mi...

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  11. When two resistances are connected in parallel then the equivalent res...

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  12. A technician has only two resistance coils. By using them singly in se...

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  13. If three wires of equal resistance are given then number of combinatio...

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  14. The effective resistance between A and B in the given circuit is.

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  15. A letter 'A' is constructed of a uniform wire with resistance 1.0Omega...

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  16. The effective resistance between A and B in the given circuit is

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  17. The effective resistance in series combination of two equal resistance...

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  18. A projector lamp can be used at a maximum voltage of 60V, its resistan...

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  19. The temperature coefficient of resistivity of material is 0.0004/k. Wh...

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  20. When two identical wires made of different materials having resistivit...

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