24 Questions
What is the origin of the word 'electricity'?
From the Greek word for amber
What happens when a substance loses electrons to another substance?
It becomes positively charged
What is the term for the quantity of electricity held in an object?
Electric charge
What type of electricity is characterized by its ability to attract other objects?
Static electricity
Who is credited with the discovery of 'static electricity'?
Thales of Miletus
What is the result when a positive charge equals a negative charge?
Neutral charge
What is the characteristic of an atom with a neutral charge?
It has an equal number of protons and electrons.
What is the movement of free electrons responsible for?
The flow of electric current.
What is the purpose of a conductor in an electric circuit?
To allow the flow of electric current in one or more directions.
What is the force that moves charge in an electrical field also known as?
Electromotive force
What is measured in volts (V) in an electric circuit?
The voltage, or electromotive force.
What is the purpose of a circuit in an electric circuit?
To provide a complete path for the flow of electric current.
What type of current flows in only one direction?
Direct current
What is the definition of resistance in an electric circuit?
The difficulty of passing an electric current through a substance.
What is an advantage of alternating current over direct current?
It is easily produced
What is an example of an insulator?
Rubber
What is the purpose of a rectifier?
To convert AC to DC
What is the unit of measurement for voltage?
Volts
What is the function of the ground in an electrical circuit?
To provide a common return path for electric current
What is the binding energy in an atom?
The force of attraction between positive and negative charges
What is the method to achieve free electrons?
By decreasing the valence electron count
What is the unit of measurement for electric current?
Ampere (A)
What is one coulomb equal to?
6.25 x 10^18 electrons
What is the purpose of a powerbank?
To store electric energy
Learn about the basics of electricity, including its definition, sources, and key concepts such as current, voltage, and resistance. Discover the difference between insulators and conductors, and explore the history of electricity's discovery.
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