Basics of Electrical Energy and Circuits Quiz

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Questions and Answers

What is the definition of an electrical conductor?

The material which allows charged particles to flow through it and constitutes an electric current.

What is the definition of an insulator?

The material which does not allow charged particles to flow through it and constitutes an electric current.

What is the charge on an electron and a proton?

The charge on an electron is -1.6 x 10^-19 C, and the charge on a proton is +1.6 x 10^-19 C.

What are the examples of insulators and conductors?

Examples of conductors include metals, metallic alloys, ionized electrolytic solutions, graphite, and ionized gaseous mixtures. Examples of insulators include non-metals, pure semiconductors, wood, rubber, plastic, glass, non-ionized compounds/gases, and pure water. Signup and view all the answers

What is the symbol for electric charge and its measurement unit?

The symbol for electric charge is 'Q' or 'q' and it is measured in Coulombs (C). Signup and view all the answers

What is the basis for classifying a material as a conductor or insulator?

The nuclear/atomic property of a material Signup and view all the answers

According to modern electron theory, what does an atom consist of?

A hard central core called nucleus containing protons and neutrons, and electrons revolving around the nucleus in orbits and shells. Signup and view all the answers

What does the electronic/electrical current consist of?

Charged particles, which can be free electrons from a nucleus with a positive valency, or some ionized molecule/particle/atom. Signup and view all the answers