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TYPES OF ENERGY STORE - examples explained
(c) Electrical energy & electrostatic energy stores
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 Electrical energy
and electrostatic energy stores
-
Electrical energy is usually the flow of
electrical charge in the form of negative electrons.
-
When an electrical current flows
('electricity'), the electrons carry the energy from a higher
potential energy to a lower potential energy - measured as the
potential difference in volts.
-
A battery is a source of
electrical energy
but it is initially a store of chemical energy.
-
You can of course convert
electrical energy to another energy store e.g. charging a battery to
increase its chemical potential energy store.
-
Electrical energy can be converted into light
with bulbs, thermal energy in heaters, or kinetic
energy in electric motors.
-
Electrical energy can be stored
as static electricity where electrical charge cannot move until the
'charged' material is placed in contact with an electrical
conductor.
-
With electrostatic energy you are
dealing with:
-
Any attraction or repulsion
movement of charged objects involves a force acting through a
distance, so work is done and energy is transferred.
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TOP OF PAGE
Energy resources,
energy
transfers, work done and
electrical power supply revision notes index
Types of energy & stores - examples compared/explained, calculations of
mechanical work done and power
Chemical
energy stores *
Elastic
potential energy stores, calculations *
Electrical
& electrostatic
energy stores
Gravitational potential
energy and calculations *
Kinetic
energy stores
and calculations *
Nuclear
energy store
Thermal
energy stores *
Light energy *
Sound energy *
Magnetic
energy stores
Conservation of energy,
energy transfers-conversions, efficiency - calculations and
Sankey diagrams gcse physics
See also
More on methods of reducing heat transfer eg in a house, insulating properties of materials
Energy resources: uses, general survey & trends,
comparing renewables, non-renewables, generating electricity
Renewable energy (1) Wind power and
solar power, advantages and disadvantages gcse physics revision
notes
Renewable energy (2) Hydroelectric power and
geothermal power,
advantages and disadvantages
gcse physics
Renewable energy (3) Wave power and tidal barrage power,
advantages and disadvantages
gcse physics
See also
Renewable energy - biomass - biofuels & alternative fuels,
hydrogen, biogas, biodiesel gcse chemistry notes
Greenhouse
effect, global warming, climate change,
carbon footprint from fossil fuel burning gcse chemistry
The absorption and emission of radiation by
materials - temperature & surface factors including global warming
The Usefulness of Electricity gcse
physics electricity revision notes
and
The 'National Grid' power supply, mention of small
scale supplies, transformers gcse
physics notes
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electrostatic energy stores GCSE
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