if a toaster oven uses 1000 J of electrical energy to produce 800 J of thermal energy, what is the percent efficiency of the toaster oven.

80%

Explanation:

The thermal energy output by the oven is 800 J which is the useful energy that can be utilized for cooking.

The electrical energy input to the oven is 1000 J.

The efficiency of the oven =

(Useful energy output)/(Total energy input to the oven) x 100

Hence, the efficiency of the oven is 80%.

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

continuous conducting path for current, power supply