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Physics
Electricity
Circuit Energy Transfers
Energy transfers in everyday appliances
Energy transfers in everyday appliances
What You Need to Know
Describe how different domestic appliances transfer energy from batteries or mains to kinetic or thermal energy stores.
Calculate energy transferred by electrical work using the equations:
E
=
P
t
E = P t
E
=
Pt
E
=
Q
V
E = Q V
E
=
Q
V
Explain the relationship between the power of a device, potential difference, current, and energy transferred.
Describe the relationship between power ratings of appliances and changes in stored energy during use.
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Energy transfers in everyday appliances
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