An electric lamp marked 240v, 60 W is left to operate for an hour. How…

Physics JAMB 2009

An electric lamp marked 240v, 60 W is left to operate for an hour. How much energy is generated by the filament?

  • 3.86 x 105J
  • 3.56 x 105J
  • 1.80 x 104J
  • 2.16 x 105J checkmark

The correct answer is: D

Explanation

Energy generated = power X time = 60w x 1h = 60 x 60 x 60 ws = 216000j = 2.16 x 105J

There is an explanation video available .

Previous Question Next Question

Leave A Comment