Question

an electric toaster is rated 1200 watts at 120 volts. what is the total electrical energy used to operate the toaster for 30. seconds?

Explanation:

Step1: Recall the formula for electrical energy

The formula for electrical energy \( E \) is \( E = P\times t \), where \( P \) is power and \( t \) is time.

Step2: Substitute the given values into the formula

Given \( P = 1200\space W \) and \( t=30\space s \).
Substitute into \( E = P\times t \):
\( E=1200\times30\)
\( E = 36000\space J\)
\( E=3.6\times 10^{4}\space J\)

Answer:

\(3.6\times 10^{4}\space J\) (the orange - colored option)