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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

Text Solution

Verified by Experts

The correct Answer is:
C
`V xx I xx t = ms Delta theta`
`rArr t = (1 xx 4200 xx (100 - 20))/(220 xx 4) ~~ 381. 82 sec`
`rArr t = 6.3 min`.
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