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Electricity Fundamentals in Applied Engineering

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Questions and Answers

What is the origin of the word 'electricity'?

From the English word for power
From the Greek word for static
From the Greek word for amber (correct)
From the Latin word for energy

What happens when a substance loses electrons to another substance?

It loses its electrical properties
It becomes positively charged (correct)
It becomes negatively charged
It becomes neutral

What is the term for the quantity of electricity held in an object?

Electric voltage
Electric resistance
Electric charge (correct)
Electric current

What type of electricity is characterized by its ability to attract other objects?

Static electricity (A) Signup and view all the answers

Who is credited with the discovery of 'static electricity'?

Thales of Miletus (C) Signup and view all the answers

What is the result when a positive charge equals a negative charge?

Neutral charge (C) Signup and view all the answers

What is the characteristic of an atom with a neutral charge?

It has an equal number of protons and electrons. (D) Signup and view all the answers

What is the movement of free electrons responsible for?

The flow of electric current. (D) Signup and view all the answers

What is the purpose of a conductor in an electric circuit?

To allow the flow of electric current in one or more directions. (B) Signup and view all the answers

What is the force that moves charge in an electrical field also known as?

Electromotive force (A) Signup and view all the answers

What is measured in volts (V) in an electric circuit?

The voltage, or electromotive force. (A) Signup and view all the answers

What is the purpose of a circuit in an electric circuit?

To provide a complete path for the flow of electric current. (D) Signup and view all the answers

What type of current flows in only one direction?

Direct current (A) Signup and view all the answers

What is the definition of resistance in an electric circuit?

The difficulty of passing an electric current through a substance. (D) Signup and view all the answers

What is an advantage of alternating current over direct current?

It is easily produced (C) Signup and view all the answers

What is an example of an insulator?

Rubber (A) Signup and view all the answers

What is the purpose of a rectifier?

To convert AC to DC (A) Signup and view all the answers

What is the unit of measurement for voltage?

Volts (B) Signup and view all the answers

What is the function of the ground in an electrical circuit?

To provide a common return path for electric current (D) Signup and view all the answers

What is the binding energy in an atom?

The force of attraction between positive and negative charges (A) Signup and view all the answers

What is the method to achieve free electrons?

By decreasing the valence electron count (C) Signup and view all the answers