Question

(i) A 1,000 W electric iron is used for 6 minutes to press some clothes. How many kWh of electrical energy is used? Answer:

(ii) Find the minimum amp value fuse for a 450 W refrigerator working on 120 V.
Answer:

(iii) Find the total resistance of two resistors 5.0 Ω and 9.0 Ω connected in parallel.
Answer.

(iv) Find the total resistance of two resistors 6.0 Ω and 8.0 Ω connected in series.
Answer:

Answer 1

Answer:

A kilowatt-hour is 1,000 watts used for one hour. As an example, a 100-watt light bulb operating for ten hours would use one kilowatt-hour. Below are some examples of electrical appliances found in most homes. These examples are using a 10 cents per kWh rate.