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A wire of resistance 4 Omega is bent thr...

A wire of resistance `4 Omega` is bent through `180^@` at its mid point and the two halves are twisted together. Then the resistance is

A

`1 Omega`

B

`2 Omega`

C

`5 Omega`

D

`8 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
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CHHAYA PUBLICATION-CURRENT ELECTRICITY -EXERCISE ( MULTIPLE CHOICE QUESTION)
  1. A block has dimensions 1 cm, 2cm, 3cm Ratio of the maximum and minimum...

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  2. A conductor with rectangular cross section has dimensions ( a times 2a...

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  3. A wire of resistance 4 Omega is bent through 180^@ at its mid point an...

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  4. The temperature coefficient of resistance of a metal is 0.004 ^@C^-1. ...

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  5. A carbon resistor has a resistance of 10^6 Omega. The colour of its th...

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  6. The resistance of a wire is 5 Omega at 50^@C and 6 Omega at 100^@C . T...

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  7. If three resistances connected in series,are related as R1 gt R2 gt R3...

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  8. IF three resistances are connected in parallel and the relation betwee...

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  9. Two resistances of 6 Omega and 3 Omega are connected in parallel and t...

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  10. A series combination of three resistances 1 Omega, 2 Omega and 3 Omega...

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  11. A uniform metal wire of resistance R is stretched to twice its length....

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  12. A set of n identical resistors,each of resistance R ohm when connected...

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  13. An uniform wire of resistance 36 Omega is bent in the form of a circle...

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  14. A ring is made of a wire having a resistance R0=12 Omega. Find the poi...

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  15. When a resistance of 12 Omega is conencted with a cell of emf 1.5 V,0....

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  16. When a resistance of 12 Omega is conencted with a cell of emf 1.5 V,0....

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  17. A shunt of resistance 1 Omega is connected with a galvanometer of resi...

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  18. A galvanometer of resistance R is connected to an electric circuit. Th...

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  19. Two electric cells each of emf 1.5 V and internal resistance 2 Omega a...

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  20. n identical cells, each of emf e and internal resistance r, are first ...

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