Verified Solution • 2025–26 Session moderate

QAIPMT-2008-Ph-2245: NEET 2008 Physics - Class 12 AIPMT-2008-Ph-2245 Solution: An electric kettle takes 4 A current at 220 V. How much time…

An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20∘C20^\circ C? The temperature of boiling water is 100∘C100^\circ C 12.6 min 4.2 min 6.3 min 8.4 min

Multiple Choice Options

  • A (3)1/3:1{\left( 3 \right)^{1/3}}:1 ( 3 ) 1/3 : 1
  • B 1:01
  • C 1:03
  • D 3:01

Step-by-Step Verified Solution

A 1 : A 2 = 1 : 3 Their radii will be in the ratio R 0 A 1 1 / 3 : R 0 A 2 1 / 3 = 1 : 3 1/3 _ _ A 1 : _ A 2 = A 1 4 3 � R 1 3 : A 2 4 3 � R 2 3 = 1 1 3 : 3 ( 3 1 / 3 ) 3 = 1 : 1

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