How much electrical energy is used by a 1000-watt microwave that runs for 30 minutes?

1 Answer
Feb 9, 2018

Answer:

#1,800,000J (1.8 MJ)#

Explanation:

#E = P * t#

where

#E# is energy, in joules #J#

#P# is power, in watts #W#

#t# is time, in seconds #s#

#30# min #= 30 * 60s#

#= 1800s#

#E = 1000W * 1800s#

#= 1,800,000 J#

#1,800,000 J = 1.8 MJ#

(#M# stands for mega, #10^6#)