Step-by-step explanation
Step 1
a)Power
this is an electric power measure of the rate of electrical energy transfer by an electric circuit per unit time,it is given by the expression
then
Let
V= 120 v
I=15 A
now,replace in the formula
therefore, teh answer is
a) 1800 Joules
Step 2
if runs for 3 minutes
how many joules of energy
Power can be expressed as P = Work/Change in Time}
so
so
b)324000 Joules
Step 3
c)Kilowatt -hour
to do this conversion of units, we need to know the equivalence:
so
c) 0.09 Kw-h
I hope this helps you