It takes 4 minutes to boil a quantity of water using an electrical heating coil….

Physics WAEC 2009

It takes 4 minutes to boil a quantity of water using an electrical heating coil. How long will it take to boil the same quantity of water using the same coil if the current is doubled? [Neglect any external heat losses]

  • 8 minutes
  • 4 minutes
  • 2 minutes checkmark
  • 1 minute

The correct answer is: C

Explanation

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