help!! PLZ

[rudeboy500]

hi can you tell me which formulas to use on these questions.

Q1

A 3kW wall mounted bathroom heater has an efficiency of 85%. How

much power is lost over 2 hours of use?

Q2

A standard circuit draws 5A and feeds a load with a resistance of 0.5Ω, what will be the total power?

I have a exam at 7.30pm 2330 level2 202

and bricking it

thanks

Rudeboy500

 

[training_spark]

try p= I

 

[rudeboy500]

thanks for getting to me

just wondered how hard is this exam!

thanks

Rudeboy500

 

[septiclecky]

try p= I