Difference between revisions of "Circuit"
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: [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Kinetic Energy Store|kinetic energy store]] of the [[motor]] as it speeds up. | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Kinetic Energy Store|kinetic energy store]] of the [[motor]] as it speeds up. | ||
: [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Thermal Energy Store|thermal energy store]] of the [[motor]] due to [[friction]]. | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Thermal Energy Store|thermal energy store]] of the [[motor]] due to [[friction]]. | ||
| + | |||
| + | ====Speaker or Buzzer==== | ||
| + | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Kinetic Energy Store|kinetic energy store]] of the [[Speaker]]. | ||
| + | : [[Energy]] is also [[Energy Transfer|transferred]] away from the [[Speaker]] by [[sound]] [[radiation]]. | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | A '''circuit''' is a loop of [[wire]] that [[electricity]] flows around. | ||
| + | |||
| + | ===About Circuits=== | ||
| + | : [[Circuit]]s can have [[component]]s in [[Series Circuit|series]] or [[Parallel Circuit|parallel]]. | ||
| + | : [[Component]]s in [[Parallel Circuit|parallel]] in a [[circuit]] have the same [[Potential Difference]] across them but share the [[Electrical Current|current]]. | ||
| + | : [[Component]]s in [[Series Circuit|series]] in a [[circuit]] have the same [[Electrical Current|Current]] through them but share the [[Potential Difference|potential difference]]. | ||
| + | |||
| + | ===Examples=== | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:DiodeIVGraphCircuit.png|center|200px]] | ||
| + | |[[File:LDRPotentialDivider2.png|center|200px]] | ||
| + | |[[File:ResistanceWireCircuit2.png|center|200px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |This [[circuit]] can be used to plot the [[IV Graph]] for a [[diode]]. | ||
| + | | style="height:20px; width:200px; text-align:center;" |This [[circuit]] can be used to activate a [[Electrical Bulb|lamp]] when it is dark. | ||
| + | | style="height:20px; width:200px; text-align:center;" |This [[circuit]] can be used to find the [[Electrical Resistance|resistance]] of a [[wire]]. | ||
| + | |} | ||
| + | |||
| + | ===Energy Transfers=== | ||
| + | ====Cell==== | ||
| + | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] out of the [[Chemical Potential Energy Store|chemical potential energy store]]. | ||
| + | |||
| + | ====Light Bulb==== | ||
| + | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Thermal Energy Store|thermal energy store]] of the [[Filament Bulb|bulb]]. | ||
| + | : [[Energy]] is also [[Energy Transfer|transferred]] away from the [[Filament Bulb|bulb]] by [[light]] [[radiation]]. | ||
| + | |||
| + | ====Motor==== | ||
| + | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Kinetic Energy Store|kinetic energy store]] of the [[motor]] as it speeds up. | ||
| + | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Thermal Energy Store|thermal energy store]] of the [[motor]] due to [[friction]]. | ||
| + | |||
| + | ====Electrical Heater==== | ||
| + | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Thermal Energy Store|thermal energy store]] of the [[Electrical Heater|heater]]. | ||
====Speaker or Buzzer==== | ====Speaker or Buzzer==== | ||
: [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Kinetic Energy Store|kinetic energy store]] of the [[Speaker]]. | : [[Energy]] is [[Energy Transfer|transferred]] [[Electrical Energy Transfer|electrically]] into the the [[Kinetic Energy Store|kinetic energy store]] of the [[Speaker]]. | ||
: [[Energy]] is also [[Energy Transfer|transferred]] away from the [[Speaker]] by [[sound]] [[radiation]]. | : [[Energy]] is also [[Energy Transfer|transferred]] away from the [[Speaker]] by [[sound]] [[radiation]]. | ||
Revision as of 18:36, 28 February 2019
Contents
Key Stage 2
Meaning
A circuit is a loop of wire that electricity flows around.
About Circuits
- A circuit needs to be complete otherwise electricity will not flow through it. Any break in the circuit will stop the electricity from flowing.
- A circuit starts and ends at the source of power. This is usually a battery or cell but it can be a generator or Solar Cell.
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| A circuit must be a complete loop without any breaks or it will not work. | The break in this circuit stops it from working. |
To practice building a circuit you can use a circuit simulator by clicking on the picture below.
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Key Stage 3
Meaning
A circuit is a loop of wire that electricity flows around.
About Circuits
- Circuits can have components in series or parallel.
- Components in parallel in a circuit have the same Potential Difference across them but share the Current.
- Components in series in a circuit have the same Current through them but share the Potential Difference.
Examples
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| The bulb and Ammeter are in series so they have the same Current going through them. | The cell, bulb and Voltmeter are in parallel so they have the same Potential Difference across them. | The two bulbs are in parallel so they have the same Potential Difference across them but may have a different Current passing through them. |
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| The motor and resistor are in series so they have the same Current passing through them but share the 1.5V Potential Difference between them. | The bulb and motor are in parallel so they have the same Potential Difference across them but may have a different Current passing through them. | The motor, resistor and bulb are in series so they all have the same Current passing through them but share the 1.5V Potential Difference between them. |
Energy Transfers
Cell
- Energy is transferred electrically out of the chemical potential energy store.
Light Bulb
- Energy is transferred electrically into the the thermal energy store of the bulb.
- Energy is also transferred away from the bulb by light radiation.
Motor
- Energy is transferred electrically into the the kinetic energy store of the motor as it speeds up.
- Energy is transferred electrically into the the thermal energy store of the motor due to friction.
Speaker or Buzzer
- Energy is transferred electrically into the the kinetic energy store of the Speaker.
- Energy is also transferred away from the Speaker by sound radiation.
Key Stage 4
Meaning
A circuit is a loop of wire that electricity flows around.
About Circuits
- Circuits can have components in series or parallel.
- Components in parallel in a circuit have the same Potential Difference across them but share the current.
- Components in series in a circuit have the same Current through them but share the potential difference.
Examples
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 |
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| This circuit can be used to plot the IV Graph for a diode. | This circuit can be used to activate a lamp when it is dark. | This circuit can be used to find the resistance of a wire. |
Energy Transfers
Cell
- Energy is transferred electrically out of the chemical potential energy store.
Light Bulb
- Energy is transferred electrically into the the thermal energy store of the bulb.
- Energy is also transferred away from the bulb by light radiation.
Motor
- Energy is transferred electrically into the the kinetic energy store of the motor as it speeds up.
- Energy is transferred electrically into the the thermal energy store of the motor due to friction.
Electrical Heater
- Energy is transferred electrically into the the thermal energy store of the heater.
Speaker or Buzzer
- Energy is transferred electrically into the the kinetic energy store of the Speaker.
- Energy is also transferred away from the Speaker by sound radiation.