zayzayp7820 zayzayp7820
  • 09-04-2018
  • Physics
contestada

A 129 v electric iron draws 3.47 a of current. how much heat is developed per hour? answer in units of j.

Respuesta :

jamuuj jamuuj
  • 18-04-2018
Heat is given by the formula; IVt, Where I is the current in amperes, V is the voltage in volts and t is the time in seconds.
Therefore; Heat = 3.47 × 129 ×3600 ( 1 hour, has 3600 seconds) 
= 447.63 × 3600
= 1611468 Joules
= 1.61 ×10^6 joules in one hour
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