Current Voltage And Resistance Flashcards
What is the symbol for electrical charge?
Q
What is the unit of measurement of charge and it’s symbol?
Coulomb (C)
Describe static electricity
Static electricity is the buildup charge in an insulated object
Define electric current
Electric current is carried by the electrons from a negative to positive source
What is the symbol for electric current
I
What is the unit of measurement for electric current and its symbol
Ampere represented by A
Describe Conventional current flow
Conventional current flow from positive to negative source. due to continue use this direction of charge becomes an established convention 
What is the abbreviation for electro motive force
EMF
The symbol for EMF is
E
The unit of measurement for EMF is
Volt and represented by the letter V
List the six methods of producing an EMF
Magnetic, chemical, friction, heat pressure and light
Define voltage
Voltage is an imbalance of electrons distribution between two points
Define resistance
Resistance is the property of a material that opposes the flow of an electric current

What is the unit of measurement for resistance
Ohm
What is the symbol used to represent a voltage drop across a load in an electrical circuit
V
Electron flow is a movement of charge through a conductor from
Negative to positive
What is the unit of measurement for an electric current
Ampere
What is the circuit property that opposes the flow of current called
Resistance
How can ohms law be expressed as a formula
I = E/R
What does a thermal couple used to produce an EMF
Heat
If the resistance of a circuit is held constant well the voltage across the circuit is doubled what happens to the current
Doubles
What is the symbol used to represent resistance
R
Which are examples of insulators
Glass and plastic
In a circuit when applied voltage remains constant and the total resistance increases the total current
Decrease
What is the symbol for electric charge
Q
Potential difference may be described as a difference in (fill in)
distribution between two points at the source
Electron
True or false a voltage measurement is the difference in potential between two points
True
What is the symbol for electric current
I
The voltage apply to a circuit would be
A voltage rise
