Barbering Exam Review Ch.8 Basics of Electricity | Latest Version | 2024/2025 | Rated A+
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Course
Barbering
Institution
Barbering
Barbering Exam Review Ch.8 Basics of
Electricity | Latest Version | 2024/2025 |
Rated A+
What is the basic unit of electricity?
The basic unit of electricity is the "ampere," which measures the flow of electric current.
What is a circuit?
A circuit is a closed path that allows elect...
Barbering Exam Review Ch.8 Basics of
Electricity | Latest Version | 2024/2025 |
Rated A+
What is the basic unit of electricity?
✔✔ The basic unit of electricity is the "ampere," which measures the flow of electric current.
What is a circuit?
✔✔ A circuit is a closed path that allows electricity to flow through it, enabling electrical
devices to function.
What is the difference between a conductor and an insulator?
✔✔ A conductor allows electricity to flow freely, while an insulator resists the flow of
electricity.
What does a volt measure?
✔✔ A volt measures the pressure or force of the electrical current that pushes electrons through a
conductor.
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, What is an electrical current?
✔✔ An electrical current is the flow of electrons through a conductor, typically measured in
amperes.
What is the role of a fuse in an electrical system?
✔✔ A fuse is a safety device that protects electrical circuits by breaking the circuit if the current
becomes too high, preventing damage or fire.
What is the purpose of grounding in electrical systems?
✔✔ Grounding provides a safe path for electricity to flow into the earth in case of a fault,
preventing electrical shocks and fires.
What is 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 is Ohm's Law?
✔✔ Ohm's Law states that the current (I) in a circuit is equal to the voltage (V) divided by the
resistance (R), or I = V/R.
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