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Four wires made of same material have di...

Four wires made of same material have different lengths and radii, the wire having more resistance in the following case is 

A

`l=100cm, r=1mm`

B

`l=50cm, r=2mm`

C

`l=100cm, r=(1)/(2)mm`

D

`l=50cm, r=(1)/(2)mm`

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. Two wires made of same material have their length are in the ratio 1:2...

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  3. Four wires made of same material have different lengths and radii, the...

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  4. A copper wire of cross sectional area 0.01 mm^(2)? is used to prepare ...

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  5. If a copper wire is stretched to increase its length by 0.1%. Then per...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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