Nail Technology Program

Foundation 7: Electricity & Electrical Safety

Electrical Theory, Electrotherapy & Light Energy |37 Questions |Board Exam Prep

Student Name

Date

Instructor

Score

Vocabulary Matching

Match each numbered term with the correct lettered definition. Write the letter in the blank.

Terms

1.Volt

2.Ampere

3.Ohm

4.Watt

5.Conductor

6.Insulator

7.Circuit Breaker

8.Galvanic Current

9.UV Light

10.LED Light

Definitions

A.A material that does not easily transmit electricity, such as rubber or plastic

B.The unit of measurement for the strength (intensity) of an electric current

C.A constant, direct current used in electrotherapy and iontophoresis treatments

D.The unit of measurement for the resistance of an electrical conductor

E.A safety device that automatically interrupts an electrical circuit when overloaded

F.The unit of measurement for the pressure or force that pushes electric current forward

G.A material that easily transmits electricity, such as copper, water, or the human body

H.A light-emitting diode used to cure gel nail products; cures faster and lasts longer than UV

I.The unit that measures how much electric energy is used per second

J.Ultraviolet light used to cure gel nail products and for germicidal purposes

Fill in the Blank

Complete each statement with the correct term or phrase.

Question 11Fill in the Blank

The flow of electricity along a conductor is called a/an .

Question 12Fill in the Blank

A complete circuit requires a source of electricity, a conductor, and a to consume the power.

Question 13Fill in the Blank

The two types of electric current are direct current (DC) and current (AC).

Question 14Fill in the Blank

A/An converts direct current to alternating current.

Question 15Fill in the Blank

The visible spectrum of light includes the colors red, orange, yellow, green, blue, indigo, and .

Question 16Fill in the Blank

Infrared light produces and is used to heat and relax tissues during services.

Question 17Fill in the Blank

A is a device that changes the voltage of alternating current, either stepping it up or stepping it down.

Question 18Fill in the Blank

All electrical appliances used in the salon should be listed for safety compliance.

Multiple Choice

Select the best answer for each board-exam style question.

Question 19Multiple Choice

Which type of current is used in LED and UV nail curing lamps?

A. Direct current

B. Alternating current

C. Galvanic current

D. Faradic current

Question 20Multiple Choice

The unit of electrical resistance is the:

A. Ampere

B. Volt

C. Ohm

D. Watt

Question 21Multiple Choice

Before using any electrical equipment on a client, the nail technician should:

A. Test the equipment on themselves first

B. Inspect the equipment for damage and check all connections

C. Have the client sign a liability waiver

D. Turn the equipment to its highest setting

Question 22Multiple Choice

The primary advantage of LED curing lamps over UV curing lamps in nail services is:

A. LED lamps work with all types of gel

B. LED lamps cure faster and bulbs last significantly longer

C. LED lamps produce no light at all

D. LED lamps are less expensive to purchase

Question 23Multiple Choice

A GFCI (Ground Fault Circuit Interrupter) is designed to:

A. Increase the power output of salon equipment

B. Protect against electrical shock by interrupting the circuit

C. Convert AC to DC power

D. Charge battery-operated tools

Question 24Multiple Choice

Which of the following is NOT a safe practice when working with electrical equipment?

A. Disconnecting appliances by pulling the plug, not the cord

B. Using extension cords as permanent wiring solutions

C. Keeping electrical cords away from water

D. Reading manufacturer instructions before use

Question 25Multiple Choice

Iontophoresis uses galvanic current to:

A. Stimulate muscle contractions

B. Introduce water-soluble products into the skin

C. Dry nail polish faster

D. Remove gel nail enhancements

Question 26Multiple Choice

Visible light makes up what percentage of natural sunlight?

A. 5%

B. 35%

C. 65%

D. 90%

True / False

Write T for True or F for False next to each statement.

Question 27True / False

Direct current (DC) flows in one continuous direction, while alternating current (AC) changes direction rapidly.

True

False

Question 28True / False

Water is an insulator and does not conduct electricity.

True

False

Question 29True / False

UV lamps used in nail salons emit the same type of radiation as tanning beds.

True

False

Question 30True / False

A fuse is a safety device that melts and breaks a circuit when current exceeds a safe level.

True

False

Question 31True / False

It is acceptable to use electrical equipment near water as long as it is plugged into a GFCI outlet.

True

False

Question 32True / False

Infrared rays are located beyond the visible spectrum of light and produce heat.

True

False

Question 33True / False

LED nail lamps cure all types of gel polish, including both UV-cured and LED-cured formulas.

True

False

Question 34True / False

One milliampere equals one-thousandth of an ampere.

True

False

Short Answer

Answer each question in 2-4 complete sentences.

Question 35Short Answer

Explain the difference between a conductor and an insulator, and give two examples of each that are found in a nail salon.

Question 36Short Answer

Describe three electrical safety practices that every nail technician should follow in the salon.

Question 37Short Answer

Compare UV and LED nail curing lamps. Include how each works, curing time differences, and any safety considerations.