Task 1.
Terms Definition SI unit
Electrical charge is the physical property of Coulomb. (C)
matter that causes it to
experience a force when placed
in an electromagnetic field.
Example: when a wire carries
electric current to the television
or refrigerator.
Current is the rate of flow of electric Amperes. (A)
charge, carries usually
electrons or electron-deficient
atoms.
Resistance the flow of an electric current Ohms. (Ω)
through most conductors.
Resistivity Resistivity is the electrical (Ωm) or ohms×metre.
resistance per unit length and
per unit of across-sectional area.
Potential different is defined as the work needed Volts (V)
per unit of charge to move a test
charge between the two points.
Emf is the electrical action produced Volts (V)
by a non-electrical source. Or
Energy supplied to electric
charge.
Electrical power is the rate, per unit time, at Watt (W)
which electrical energy is
transported by an electric
circuit.
Conductance is the measure of how easily Siemens (S)
electrical current, or the flow of
charge can pass through a
material?
Ohmic The SI- derived unit of electrical Ohms (Ω)
resistance of a conductor
through which a current of one
ampere flows when subjected to
a one-volt potential across its
terminal.
Non ohmic It is a conductor that doesn’t Ohms (Ω)
follow ohm’s law. So, V isn’t
equal to IR
Semi-conductor Is a solid substance that has a
conductivity between that of an
insulator and that of most
Terms Definition SI unit
Electrical charge is the physical property of Coulomb. (C)
matter that causes it to
experience a force when placed
in an electromagnetic field.
Example: when a wire carries
electric current to the television
or refrigerator.
Current is the rate of flow of electric Amperes. (A)
charge, carries usually
electrons or electron-deficient
atoms.
Resistance the flow of an electric current Ohms. (Ω)
through most conductors.
Resistivity Resistivity is the electrical (Ωm) or ohms×metre.
resistance per unit length and
per unit of across-sectional area.
Potential different is defined as the work needed Volts (V)
per unit of charge to move a test
charge between the two points.
Emf is the electrical action produced Volts (V)
by a non-electrical source. Or
Energy supplied to electric
charge.
Electrical power is the rate, per unit time, at Watt (W)
which electrical energy is
transported by an electric
circuit.
Conductance is the measure of how easily Siemens (S)
electrical current, or the flow of
charge can pass through a
material?
Ohmic The SI- derived unit of electrical Ohms (Ω)
resistance of a conductor
through which a current of one
ampere flows when subjected to
a one-volt potential across its
terminal.
Non ohmic It is a conductor that doesn’t Ohms (Ω)
follow ohm’s law. So, V isn’t
equal to IR
Semi-conductor Is a solid substance that has a
conductivity between that of an
insulator and that of most
