Chapter 7 - Electricity

Which of the following is TRUE of electricity and the beauty and wellness industry?

• Most beauty professionals will not interact with electricty.

• Most of the equipment that beauty professionals deal with is very dangerous

• Electricity use in the beauty industry is limited to clippers and blowdryers

• Advanced electrical machines require an understanding of electrical theory.

Electricity use impacts ____ of the services that beauty professionals offer their clients.

• all

• most

• about half

• a small handful

Which of the following types of effects does electricity exhibit?

• magnetic

• magnetic and thermal

• magnetic and chemical

• magnetic, thermal, and chemical

Which of the following is TRUE of electricity?

• It occupies space, but has no mass.

• It has mass, but occupies no space

• it occupies space and has mass

• it does not occupy space or have mass.

Why is copper used in electrical wiring and electrical motors?

• because it is inexpensive

• because it is a good conductor

• because if it a good insulator

• because it providers safeguards against electrocution

Which of the following is an example of a conductor?

• tap water

• rubber

• glass

• cement

Which of the following is a good example of an insulator?

• copper

• tap water

• wood

• steel

Which of the following BEST differentiates between direct current and alternating current?

• Direct current flows in one direction, whereas alternating current flows back and forth.

• Direct current flows back and forth, whereas alternating current flows in one direction.

• Direct current is not truly an electrical current, whereas alernating current is.

• Direct current is the true form of electrical current, whereas alternating current is not.

Which of the following is TRUE of alternating current?

• is it produced by chemical means

• it travels in only one direction

• It is most often found in batteries

• It is rapid, interrupted current

Which of the following measures the resistance of electrical current?

• an ohm

• an ampere

• a volt

• a watt