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Electric Current: Basics. Current Electricity. Current electricity is like current in a river. A high or fast river current means the water is rushing past the shore quickly. A high current in electricity means that the electrons are moving past points in the circuit quickly .

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Presentation Transcript

Current electricity
Current Electricity

  • Current electricity is like current in a river.

  • A high or fast river current means the water is rushing past the shore quickly.

  • A high current in electricity means that the electrons are moving past points in the circuit quickly.


Current electricity1
Current Electricity

  • Electrons keep moving around the circuit with a constant source of energy (ex. Battery, power outlet, etc.)

    • Energy gives the electrons a ‘push’


Current electricity2
Current Electricity

  • Current: the rate of electron flow past a given point in a circuit


Current electricity3
Current Electricity

  • Symbol: I

  • Units: Amperes (A)

  • Measured with: Ammeter



Potential difference1
Potential Difference

  • Potential Difference/Voltage: the difference in electrical energy per unit charge measured at two different points

  • Symbol: V

  • Units: Volts

  • Measured with: Voltmeter


What is an electric circuit
What is an Electric Circuit?

  • An electric circuit is a continuous path through which an electric current is passed

  • Electric circuits convert electrical energy into other forms of energy we need – such as heat or light.


Parts of an electric circuit
Parts of an Electric Circuit

  • There are five basic parts found in a simple electric circuit.


Parts of an electric circuit1
Parts of an Electric Circuit

  • Energy Source

    • Provides electrical energy in a circuit

    • E.g. battery, electrical outlet

Battery

(energy source)


Parts of an electric circuit2
Parts of an Electric Circuit

  • Load

    • An electrical device that converts electrical energy into another form

    • E.g. light bulb, motor

Light Bulb

(load)


Parts of an electric circuit3
Parts of an Electric Circuit

  • Switch

    • A control device that opens or closes a circuit

Switch


Parts of an electric circuit4
Parts of an Electric Circuit

  • Connectors

    • Conducting wires carry the electrical energy

Connectors


Parts of an electric circuit5
Parts of an Electric Circuit

  • Meters

    • Measure current (ammeter) andpotential difference (voltmeter)

Ammeter

Voltmeter


Electrical symbols
Electrical Symbols

Energy Source – One Battery


Electrical symbols energy source
Electrical Symbols Energy Source

One Battery

(One Dry Cell)

Two Batteries

(Two Dry Cells)



Electrical symbols load1
Electrical Symbols - Load

Light Bulb

Motor


Electrical symbols switch
Electrical Symbols - Switch

Open Switch

Closed Switch



Electrical symbols meters
Electrical Symbols - Meters

Voltmeter

Ammeter