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A letter 'A' is constructed of a uniform...

A letter 'A' is constructed of a uniform wire with resistance `1.0Omega` per cm. The sides of the letters are 20 cm and the cross piece in the middle is 10cm long. The apex angle is `60^(@)`. The resistance between the ends of the legs is close to : 

A

`50.0Omega`

B

`10Omega`

C

`36/7Omega`

D

`26.7Omega`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - II
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  2. The effective resistance between A and B in the given circuit is.

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

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

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

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

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

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

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  9. Two metal wires of identical dimensions are connected in series. If si...

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  10. Heat produced in a conductor of resistance 4.2Omega with 10A current i...

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  11. A resistance coil of 60Omega is immersed in 42 kg of water. A current ...

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  12. Two bulbs whose resistances are in the ratio of 1 : 2 are connected in...

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  13. Which of the four resistances P,Q,R and S generate the greatest amount...

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  14. What is the ratio of heat generated in R and 2R

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  15. A 5^(0)C rise in the temperature is observed in a conductor by passing...

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  16. For ensuring dissipation of same energy in all three resistors (R(1), ...

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  17. The intemal resistance of a 2.1 V cell which gives a current of 0.2 A ...

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  18. The emf of a daniel cell is 1.08V. When the terminals of the cell are ...

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  19. A primary cell has an e.m.f, of 1.5 V, when short circuited it gives a...

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  20. If the external resistance is equal to the internal resistance of a ce...

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