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A technician has only two resistance coi...

A technician has only two resistance coils. By using them singly in series or in parallel, he is able to obtain the resistance 1.5, 2, 6 and 8 ohms. The resistance of two coils are 

A

3 ohm and 5 ohm

B

1 ohm and 7 ohm

C

2 ohm and 6 ohm

D

4 ohm each

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - II
  1. A piece of wire of resistance 4Omega is bent through 180^(@) at its mi...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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