Question 1

A 'displacement current' is

Accepted Answer

A)  a flow of electrons within an insulator. 
B)  a flow of charges within an insulator. 
C)  a distortion of the electron orbits within an insulator. 
D)  another term for 'leakage current'. 
A)  a flow of electrons within an insulator. 
B)  a flow of charges within an insulator. 
C)  a distortion of the electron orbits within an insulator. 
D)  another term for 'leakage current'. C

Question 2

An atomic sub-particle that carries no electrical charge is called a

Accepted Answer

A)  proton. 
B)  neutron. 
C)  quantum. 
A)  proton. 
B)  neutron. 
C)  quantum. B

Question 3

A 'positive ion' is an atom with

Accepted Answer

A)  more electrons than protons. 
B)  more protons than neutrons. 
C)  more protons than electrons. 
D)  more electrons than neutrons. 
A)  more electrons than protons. 
B)  more protons than neutrons. 
C)  more protons than electrons. 
D)  more electrons than neutrons. C

Question 4

The chemical and electrical properties of an atom is determined by its

Accepted Answer

A)  k' shell. 
B)  l' shell. 
C)  m' shell. 
D)  valence shell'. 
A)  k' shell. 
B)  l' shell. 
C)  m' shell. 
D)  valence shell'.

Question 5

Hydrogen is an example of

Accepted Answer

A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator. 
A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator.

Question 6

Ceramics, glass, and plastics are examples of practical

Accepted Answer

A)  semiconductors. 
B)  conductors. 
C)  insulators. 
D)  compounds. 
A)  semiconductors. 
B)  conductors. 
C)  insulators. 
D)  compounds.

Question 7

The outermost shell of an atom is called its

Accepted Answer

A)  k' shell. 
B)  l' shell. 
C)  m' shell. 
D)  valence shell'. 
A)  k' shell. 
B)  l' shell. 
C)  m' shell. 
D)  valence shell'.

Question 8

An atom's positively-charged sub-particles are called

Accepted Answer

A)  neutrons. 
B)  protons. 
C)  electrons. 
D)  quanta. 
A)  neutrons. 
B)  protons. 
C)  electrons. 
D)  quanta.

Question 9

Conventional current' is

Accepted Answer

A)  a flow of positive charges in a conductor. 
B)  a flow of ions in a liquid conductor. 
C)  the result of an error by an early scientist. 
D)  no longer used these days. 
A)  a flow of positive charges in a conductor. 
B)  a flow of ions in a liquid conductor. 
C)  the result of an error by an early scientist. 
D)  no longer used these days.

Question 10

Neils Bohr's model of the atom consists of a nucleus of

Accepted Answer

A)  electrons, orbited by neutrons and protons. 
B)  electrons and neutrons, orbited by protons. 
C)  protons and neutrons, orbited by electrons. 
D)  protons and electrons, orbited by neutrons. 
E)  0 
A)  electrons, orbited by neutrons and protons. 
B)  electrons and neutrons, orbited by protons. 
C)  protons and neutrons, orbited by electrons. 
D)  protons and electrons, orbited by neutrons. 
E)  0

Question 11

Carbon monoxide is an example of

Accepted Answer

A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator. 
A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator.

Question 12

An atom's negatively-charged sub-particles are called

Accepted Answer

A)  neutrons. 
B)  protons. 
C)  electrons. 
D)  quanta. 
A)  neutrons. 
B)  protons. 
C)  electrons. 
D)  quanta.

Question 13

Matter composed of different types of atom is called

Accepted Answer

A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator. 
A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator.

Question 14

If the outer shell of an atom is less than half full, it will tend to

Accepted Answer

A)  attract free electrons. 
B)  lose electrons. 
C)  be electrically negative. 
D)  be electrically positive. 
A)  attract free electrons. 
B)  lose electrons. 
C)  be electrically negative. 
D)  be electrically positive.

Question 15

A 'positive ion' will tend to attract

Accepted Answer

A)  protons. 
B)  electrons. 
C)  neutrons. 
D)  other atoms. 
A)  protons. 
B)  electrons. 
C)  neutrons. 
D)  other atoms.

Question 16

In metals, an electric current is

Accepted Answer

A)  a rapid drift of electrons from negative to positive. 
B)  a rapid drift of electrons from positive to negative. 
C)  an extremely-slow drift of electrons from negative to positive. 
D)  an extremely-slow drift of electrons from positive to negative. 
A)  a rapid drift of electrons from negative to positive. 
B)  a rapid drift of electrons from positive to negative. 
C)  an extremely-slow drift of electrons from negative to positive. 
D)  an extremely-slow drift of electrons from positive to negative.

Question 17

An universal law that applies to electrical charges states that

Accepted Answer

A)  like charges attract. 
B)  unlike charges attract. 
C)  like charges neutralise. 
D)  unlike charges neutralise. 
A)  like charges attract. 
B)  unlike charges attract. 
C)  like charges neutralise. 
D)  unlike charges neutralise.

Question 18

Matter composed entirely of the same type of atom is called

Accepted Answer

A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator. 
A)  an element. 
B)  a compound. 
C)  a conductor. 
D)  an insulator.

Question 19

A 'free electron' is an electron released from an atom's

Accepted Answer

A)  k' shell. 
B)  l' shell. 
C)  m' shell. 
D)  valence' shell 
A)  k' shell. 
B)  l' shell. 
C)  m' shell. 
D)  valence' shell

Question 20

Silver, copper,and aluminium are examples of practical

Accepted Answer

A)  semiconductors. 
B)  conductors. 
C)  insulators. 
D)  compounds. 
A)  semiconductors. 
B)  conductors. 
C)  insulators. 
D)  compounds.

Exam 1: The Electron Theory of Electricity

A 'displacement current' is

An atomic sub-particle that carries no electrical charge is called a

A 'positive ion' is an atom with

The chemical and electrical properties of an atom is determined by its

Hydrogen is an example of

Ceramics, glass, and plastics are examples of practical

The outermost shell of an atom is called its

An atom's positively-charged sub-particles are called

Conventional current' is

Neils Bohr's model of the atom consists of a nucleus of

Carbon monoxide is an example of

An atom's negatively-charged sub-particles are called

Matter composed of different types of atom is called

If the outer shell of an atom is less than half full, it will tend to

A 'positive ion' will tend to attract

In metals, an electric current is

An universal law that applies to electrical charges states that

Matter composed entirely of the same type of atom is called

A 'free electron' is an electron released from an atom's

Silver, copper,and aluminium are examples of practical

Electric Current

Potential and Potential Difference

Resistance

Practical Conductors and Insulators

Effect of Temperature Change Upon Resistance

Ohms Law of Constant Proportionality

Series, Parallel and Series-Parallel Circuits

Cells and Batteries

Internal Resistance of Voltage Sources

Energy, Work, Heat and Power

Magnetism

Electromagnetism

Magnetic Circuits

Electromagnetic Induction

Capacitors and Capacitance

Introduction to Alternating Current

Series Alternating-Current Circuits

Power in Alternating-Current Circuits

Parallel Alternating-Current Circuits

Power Factor Improvement

Balanced Three-Phase Ac Systems

Filters