Electrical Safety and Light Therapy Basics
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Questions and Answers

What is another term for light therapy?

  • Phototherapy (correct)
  • Heat therapy
  • Radiotherapy
  • Laser therapy

    • Which type of light is responsible for prompting the skin to produce vitamin D?

  • Infrared light
  • Fluorescent light
  • Galvanic light
  • Ultraviolet light (correct)

    • Which statement about ultraviolet light is true?

  • It slows chemical reactions.
  • It is invisible. (correct)
  • It has a long wavelength.
  • It is hot light.

    • What is a true statement about infrared light?

    <p>It produces heat. (C)</p> Signup and view all the answers

    What percentage of natural sunlight is visible, contributing to the visible spectrum of light?

    <p>70% (C)</p> Signup and view all the answers

    Which statement best differentiates between long wavelengths and short wavelengths?

    <p>Long wavelengths have low frequency; short wavelengths have high frequency. (B)</p> Signup and view all the answers

    How does energy typically move through space?

    <p>Through electromagnetic waves (C)</p> Signup and view all the answers

    What is a possible reaction when using cataphoresis?

    <p>A stimulation of nerves (C), A closing of pores (D)</p> Signup and view all the answers

    Which statement is true regarding a galvanic current?

    <p>It has a positive and a negative pole. (C)</p> Signup and view all the answers

    Why was it a bad idea for Alyssa to use an adapter to connect her three-pronged device into a two-pronged outlet?

    <p>It changes the appliance’s amperage. (B)</p> Signup and view all the answers

    How can the positive electrode be differentiated from the negative electrode?

    <p>The positive electrode is called an anode; the negative electrode is called a cathode. (D)</p> Signup and view all the answers

    What action did Sandra MOST likely have to take to restore power after her device caused all appliances to shut off?

    <p>Flip the main circuit switch on the circuit breaker. (D)</p> Signup and view all the answers

    What is true about the poles of an electric current?

    <p>They are either positive or negative. (D)</p> Signup and view all the answers

    Why is it likely that Jeremy's electrical equipment is not functioning properly according to the technician?

    <p>The resistance (ohms) is stronger than the force (volts). (D)</p> Signup and view all the answers

    What is used to direct electric current from an electrotherapy device to the skin?

    <p>An electrode (D)</p> Signup and view all the answers

    What risk is associated with adapting a three-pronged plug to a two-pronged outlet?

    <p>It risks electrical shock due to lack of grounding. (D)</p> Signup and view all the answers

    The practice of using electrical currents to treat the skin is known as what?

    <p>Electrotherapy (D)</p> Signup and view all the answers

    What does asking for too much amperage imply about Sandra's electrical device?

    <p>It requires more power than the circuit can provide. (D)</p> Signup and view all the answers

    Which of the following actions would NOT help Jeremy's current flow through his equipment more efficiently?

    <p>Adding more resistive appliances to the circuit. (A)</p> Signup and view all the answers

    Which of the following indicates a characteristic of the electric current poles?

    <p>They can be both positive and negative. (C)</p> Signup and view all the answers

    In terms of electrical circuits, what role does an adapter play when connecting devices?

    <p>It impacts the integrity of the overall circuit. (A)</p> Signup and view all the answers

    Which of these effects is NOT associated with cataphoresis?

    <p>An increase in blood supply (A)</p> Signup and view all the answers

    What could indicate that Sandra's device is causing a circuit overload?

    <p>The circuit breaker trips immediately when devices are turned on. (C)</p> Signup and view all the answers

    What should you do if you experience a light shock sensation while using an electrical appliance?

    <p>Unplug the appliance from the wall. (A)</p> Signup and view all the answers

    In order to practice good electrical safety, ALWAYS ______.

    <p>disconnect appliances when they are not in use (D)</p> Signup and view all the answers

    Which of the following actions is NOT considered good electrical safety advice?

    <p>Pull on the cord, not the plug, when disconnecting an electrical appliance. (D)</p> Signup and view all the answers

    In which of the following locations is a Ground Fault Interrupter (GFI) MOST likely to be required?

    <p>A bathroom (C)</p> Signup and view all the answers

    The third circular electrical connection on a three-prong plug is called a ______.

    <p>Grounding pin (D)</p> Signup and view all the answers

    Why is grounding important in electrical systems?

    <p>Because it protects against electrical shock. (A)</p> Signup and view all the answers

    What immediate action should you avoid after receiving a light shock sensation?

    <p>Continuing to use the appliance cautiously. (A)</p> Signup and view all the answers

    Which safety measure is crucial for electrical cords?

    <p>Keeping them off the floor and out of the way. (B)</p> Signup and view all the answers

    Which device helps prevent excessive current from passing through a circuit by melting when a wire overheats?

    <p>A fuse (B)</p> Signup and view all the answers

    Which electrical safety device is commonly encountered in a salon or barbershop?

    <p>A circuit breaker (A)</p> Signup and view all the answers

    What occurs if a wire is not large enough to safely carry the electrical current?

    <p>It will overheat. (A)</p> Signup and view all the answers

    What does a watt measure in the context of electricity?

    <p>How much electric energy is being used in one second (A)</p> Signup and view all the answers

    Which unit measures the resistance to electrical current?

    <p>An ohm (D)</p> Signup and view all the answers

    Which statement about alternating current is true?

    <p>It varies in magnitude and direction. (C)</p> Signup and view all the answers

    Which of the following describes an ampere?

    <p>A measure of electrical current flow. (A)</p> Signup and view all the answers

    What is the role of a nonconductor in an electrical circuit?

    <p>It prevents the flow of electrical current. (C)</p> Signup and view all the answers

    Study Notes

    Electrical Safety

    • Adapting a three-pronged plug to fit into a two-pronged outlet eliminates the intended grounding, which can be dangerous.

    • Overloading a circuit with too many appliances can cause a power outage and require resetting the main circuit switch on the circuit breaker.

    • Electrical current flows more efficiently through wires when the resistance (ohms) is lower than the force (volts).

    Light Therapy

    • Light therapy is also known as phototherapy.

    • Ultraviolet light prompts the skin to produce beneficial vitamin D.

    • Ultraviolet light is invisible and has a short wavelength.

    • Infrared light produces heat.

    • Only 35% of natural sunlight is visible, making up the visible spectrum of light.

    • Longer wavelengths have low frequency; shorter wavelengths have high frequency.

    Electrotherapy

    • Energy moves through space by stimulating nerves.

    • Cataphoresis is an electrotherapy treatment that produces reactions like closing pores and stimulating nerves.

    • Galvanic current is a direct current with a positive and a negative pole.

    • The positive electrode is called an anode; the negative electrode is called a cathode.

    • The poles of an electric current are either positive or negative.

    • Electrodes are used to direct electric current from an electrotherapy device to the client's skin.

    • The use of electrical currents to treat the skin is called electrotherapy.

    • Electrical Safety

      • Unplug any electrical appliance immediately if you feel a light shock sensation.
      • Always disconnect any electrical appliances when they are not in use.
      • Never attempt to repair electrical appliances when they malfunction.
      • Inspect electrical equipment regularly.
      • Keep electrical cords off the floor and away from everyone’s feet.
      • Do not pull on the cord when disconnecting an electrical appliance; pull on the plug.
      • Do not attempt to clean around electrical outlets or appliances while equipment is plugged in.

    • A GFI (Ground Fault Interrupter) would MOST likely be required in a bathroom.

    • The grounding pin is the third circular electrical connection on a three-prong plug.

    • Grounding is important because it protects against electrical shock by providing a path for electricity to flow to the ground.

    • Fuses and circuit breakers are electrical safety devices designed to prevent excessive current from passing through a circuit by blowing out or melting or tripping when a wire overheats.

    • Circuit breakers are electrical safety devices frequently used in salons.

    • Wires that are not large enough to carry the electrical current passing through them can overheat.

    Electrical Measurement

    • Watts measure how much electric energy is being used in one second.

    • Ohms measure the resistance of electric current.

    • Alternating current (AC) changes direction and switches polarity.

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    Description

    This quiz covers essential concepts of electrical safety, light therapy, and electrotherapy. Learn about the importance of grounding, the effects of ultraviolet and infrared light, and the mechanisms of electrotherapy treatments. Test your knowledge on these crucial topics in health and safety.

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