The electric energy used by the hairdryer is 1080000 J
What is energy?
Energy is the ability or the capacity to perform work.
To calculate the electric energy used by the hairdryer, we use the formula below.
Formula:
- P = E/t............. Equation 1
Where:
- P = Electric power of the hairdryer
- E = Electric energy used by the dryer
- t = time.
make E the subject of the equation
- E = Pt............... Equation 2
From the question,
Given:
- P = 1200 W
- t = 0.25 hour = (0.25×60) = 900 seconds
Substitute these values into equation 2
- E = 1200(900)
- E = 1080000 J.
Hence, The electric energy used by the hairdryer is 1080000 J
Learn more about electric energy here: https://brainly.com/question/21222010
