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An electric kettle has two coils. When o...

An electric kettle has two coils. When one of these is switched on, thje water in the kettle boils in 6 minutes. When the other coil is switched on, the water boils in 3 minutes. If the two coils are connected in series, the time taken to boil the water in the kettle is

A

a. East

B

b. West

C

c. North

D

d. South

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-MAGNETISM AND MATTER -Assignment Section - A Objective Type Questions (One option is correct)
  1. A diamagnetic substance when placed gently in a magnetic field moves

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  2. A frog can be levitated in a strong magnetic field below it . This is ...

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  3. An electric kettle has two coils. When one of these is switched on, th...

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  4. Relativity permeability of iron is 5500, what will be its magnetic sus...

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  5. Two similar magnets of magnets moments M(1) and M(2) are taken and vib...

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  6. If the earth's field induction at a place is 0.36 G and the angle of d...

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  7. State Gauss's theorem in electrostatics. Apply this theorem to deriv...

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  8. In following symbols are having usual meaning then which of the follow...

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  9. The graph between chi and T for paramagnetic material will be represen...

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  10. The variation of magnetic susceptibility (chi) with temperature for di...

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  11. Which of the following magnetic field (static) lines are correctly rep...

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  12. Effect due to which earth's magnetism exist is called

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  13. The location of the north magnetic pole is a latitude of

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  14. Two magnets of equal magnetic moments M each are placed as shown in fi...

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  15. The strength of the earth's magnetic field is

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  16. A line joining places of zero declination is called

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  17. Domains for motion is not necessary feature of

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  18. A superconductor exhibits perfect

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  19. Maxwell's equation oint vecB * d vecs = 0 says

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  20. A permanent magnet attracts

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