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An electric kettle takes 4 A current at ...

An electric kettle takes `4 A` current at `220 V`. How much time will it take to boil `1 kg` of wate from temperature `20^(@)C`? The temperature of boiling water is `100^(@)C`

A

12.6 min

B

4.2 min

C

6.3 min

D

8.4 min

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The correct Answer is:
C
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MOTION-10 ROTATIONAL-Exercise - 4 (Level - II)
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  6. A cylinder of mass m and radius R rolls down an inclined plane of incl...

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  8. A solid sphere of mass M, radius R and having moment of inertia about ...

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  9. A solid cylinder of mass m and radius r is rolling on a rough inclined...

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  10. A ball moves over a fixed track as shown in the figure. From A to B ba...

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  11. A rectangular plate of mass M and dimension axxb is held in horizonta...

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  12. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

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  13. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

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  14. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

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  15. A small object of uniform density rolls up a curved surface with an in...

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  16. Satement-1: if there is no external torque on a body about its centre ...

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  17. Two cylinders, one hollow (metal) and the other solid (wood) with the ...

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  18. A uniform thin cylindrical disk of mass M and radius R is attaached to...

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  19. A uniform thin cylindrical disk of mass M and radius R is attaached to...

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  20. A uniform thin cylindrical disk of mass M and radius R is attaached to...

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  21. If the resultant of all the external forces acting on a system of part...

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