Electricity & Safety
What is the primary purpose of using a circuit breaker?
To prevent electrical overloads and protect against electrical fires.
Define voltage in the context of electricity.
Voltage is the electrical potential difference between two points in a circuit.
Name one type of electrical equipment commonly used in cosmetology.
Hair dryers, curling irons, or facial steamers.
What is electrotherapy?
What is light energy?
Name one safety precaution to take when working with electrical equipment.
Always use insulated tools.
What is the unit of measurement for electrical current?
What is the first step to take before using any electrical equipment?
Inspect the equipment for any visible damage or wear.
Name one benefit of using electrotherapy in cosmetology.
Electrotherapy can improve skin tone and texture by promoting circulation and collagen production.
How does light therapy benefit skin health?
Light therapy can reduce inflammation, promote healing, and improve skin conditions such as acne and psoriasis.
What does the term "grounding" refer to in electrical safety?
Grounding refers to connecting electrical devices to the earth to prevent electrical shock.
How is resistance related to electrical flow?
Resistance opposes the flow of electric current, measured in ohms (Ω)
How often should electrical equipment be inspected for safety?
Electrical equipment should be inspected regularly, typically every six months to a year.
What is a contraindication for electrotherapy treatments?
Contraindications include pregnancy, pacemakers, and certain skin conditions.
ame one type of light therapy used in cosmetology.
Explain the importance of using insulated tools in cosmetology.
Insulated tools help prevent electrical shock while performing procedures.
Describe Ohm’s Law.
Ohm’s Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). It can be expressed as V=I⋅RV=I⋅R.
Why is it important to keep electrical cords untangled and in good condition?
Untangled and well-maintained cords reduce the risk of tripping hazards and electrical malfunctions.
Describe microcurrent therapy and its purpose.
Explain the difference between UVA and UVB rays.
UVA rays penetrate the skin more deeply and are associated with aging, while UVB rays are responsible for sunburn and are more intense.
What should you do if an electrical device sparks or smokes?
Explain the difference between alternating current (AC) and direct current (DC).
Alternating current (AC) changes direction periodically, while direct current (DC) flows in one direction only.
What should you do if a piece of equipment malfunctions during use?
Turn off the equipment immediately, unplug it, and report the issue to a supervisor.
What is the role of high-frequency current in skincare?
High-frequency current is used to treat acne, reduce inflammation, and promote healing in the skin.
What precautions should be taken when using light therapy devices?
Always use protective eyewear, follow the manufacturer's guidelines, and avoid treating areas with open wounds.