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Electrician 1st Yr > Current Voltage And Resistance > Flashcards

Current Voltage And Resistance Flashcards

1
Q

What is the symbol for electrical charge?

A

Q

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2
Q

What is the unit of measurement of charge and it’s symbol?

A

Coulomb (C)

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3
Q

Describe static electricity

A

Static electricity is the buildup charge in an insulated object

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4
Q

Define electric current

A

Electric current is carried by the electrons from a negative to positive source

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5
Q

What is the symbol for electric current

A

I

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6
Q

What is the unit of measurement for electric current and its symbol

A

Ampere represented by A

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7
Q

Describe Conventional current flow

A

Conventional current flow from positive to negative source. due to continue use this direction of charge becomes an established convention 

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8
Q

What is the abbreviation for electro motive force

A

EMF

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9
Q

The symbol for EMF is

A

E

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10
Q

The unit of measurement for EMF is

A

Volt and represented by the letter V

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11
Q

List the six methods of producing an EMF

A

Magnetic, chemical, friction, heat pressure and light

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12
Q

Define voltage

A

Voltage is an imbalance of electrons distribution between two points

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13
Q

Define resistance

A

Resistance is the property of a material that opposes the flow of an electric current

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14
Q
A



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15
Q

What is the unit of measurement for resistance

A

Ohm

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16
Q

What is the symbol used to represent a voltage drop across a load in an electrical circuit

A

V

17
Q

Electron flow is a movement of charge through a conductor from

A

Negative to positive

18
Q

What is the unit of measurement for an electric current

A

Ampere

19
Q

What is the circuit property that opposes the flow of current called

A

Resistance

20
Q

How can ohms law be expressed as a formula

A

I = E/R

21
Q

What does a thermal couple used to produce an EMF

A

Heat

22
Q

If the resistance of a circuit is held constant well the voltage across the circuit is doubled what happens to the current

A

Doubles

23
Q

What is the symbol used to represent resistance

A

R

24
Q

Which are examples of insulators

A

Glass and plastic

25
Q

In a circuit when applied voltage remains constant and the total resistance increases the total current

A

Decrease

26
Q

What is the symbol for electric charge

A

Q

27
Q

Potential difference may be described as a difference in (fill in)
distribution between two points at the source

A

Electron

28
Q

True or false a voltage measurement is the difference in potential between two points

A

True

29
Q

What is the symbol for electric current

A

I

30
Q

The voltage apply to a circuit would be

A

A voltage rise

Electrician 1st Yr (2 decks)

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