Electrical Energy (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
12 cards from this deck
Work done occurs when what flows through a circuit?
Work done occurs when what flows through a circuit?
Charge
Work done equals what in electrical circuits?
Work done equals what in electrical circuits?
Energy transferred
What does the power rating of an appliance show?
What does the power rating of an appliance show?
The power it uses (in Watts)
Unit for power rating
Unit for power rating
Watts
Greater power rating means what?
Greater power rating means what?
Uses more energy
Energy transfer type for a motor
Energy transfer type for a motor
Electrical to kinetic energy
Energy transfer type for a kettle
Energy transfer type for a kettle
Electrical to thermal energy
Examples of electrical to kinetic energy transfer
Examples of electrical to kinetic energy transfer
Fan, blender
Why do motors also produce thermal energy?
Why do motors also produce thermal energy?
Due to friction
Examples of electrical to thermal energy transfer
Examples of electrical to thermal energy transfer
Iron, kettle
Do thermal appliances (e.g. kettles, irons) typically have higher or lower power ratings?
Do thermal appliances (e.g. kettles, irons) typically have higher or lower power ratings?
Higher power rating
Energy transfers in hair dryer & washing machine
Energy transfers in hair dryer & washing machine
Electrical to kinetic & thermal energy