Question

How much would you have to pay SP Services if you

used two 40 W lamps and a 120 W television for 5 hour a
day for the month of April? (Assume the cost of 1 kWh
of energy to be 16 cents).

Answer 1

$4.80

Step-by-step explanation:

Total energy used is found with this formula:

`E = Pt`

where:

`E` is energy (in kilowatt-hours)

`P\\` is power ( in Kilowatts)

`t` is time ( in Hours)

We can find the total power consumption by adding all the appliances, then dividing by 1000 to convert it from Watts to Kilowatts:

`((40*2)+120)/(1000) =0.2kW`

And then find
`E` with 5 hours a day for 30 days:

`E= 0.2*(5*30)=30kWh`

Thus, cost needed would be:

$0.16 × 30 = $4.80