Cosmetology Test Electricity and Light Therapy

Question 1

Which type of electrical current flows in only one direction and is used in galvanic treatments?

Accepted Answer

Direct current (DC)

Answer

Alternating current (AC)

Answer

Faradic current

Answer

Sinusoidal current

Question 2

What unit is used to measure electrical resistance in a circuit?

Accepted Answer

Ohm

Answer

Volt

Answer

Ampere

Answer

Watt

Question 3

Which safety device is designed to break a circuit by melting when too much current flows through it?

Accepted Answer

Fuse

Answer

Rheostat

Answer

Conductor

Answer

Insulator

Question 4

What does electrical grounding provide in salon electrical safety?

Accepted Answer

A safe path for excess electrical current to discharge into the earth

Answer

A boost in voltage to power equipment

Answer

Insulation around wiring to prevent shock

Answer

A way to measure voltage in a circuit

Question 5

In cosmetology, galvanic current is primarily used for which two facial services?

Accepted Answer

Iontophoresis and desincrustation

Answer

Hair removal and skin toning

Answer

Sterilization and UV therapy

Answer

Microdermabrasion and dermaplaning

Question 6

What is the function of a rheostat in cosmetology electrical equipment?

Accepted Answer

To regulate or vary the strength of electrical current

Answer

To convert alternating current to direct current

Answer

To store an electrical charge for later release

Answer

To measure the resistance of a circuit

Question 7

Which type of electrical current do high-frequency machines use to produce their warming and germicidal effects?

Accepted Answer

Alternating current (AC)

Answer

Direct current (DC)

Answer

Galvanic current

Answer

Faradic current