Power Ratings (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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What is power rating?
What is power rating?
Maximum power an appliance can safely operate at
What does power rating indicate?
What does power rating indicate?
Maximum energy transferred per second by an appliance
Higher power rating & useful energy
Higher power rating & useful energy
A higher power rating doesn't necessarily mean more useful energy is transferred
High vs low power rating & efficiency
High vs low power rating & efficiency
High power may be less efficient than low power appliance
Energy transferred equation (charge & p.d.)
Energy transferred equation (charge & p.d.)
Unit of energy ()
Unit of energy ()
Joules (J)
Unit of charge ()
Unit of charge ()
Coulombs (C)
Unit of potential difference ()
Unit of potential difference ()
Volts (V)
Power equation (using p.d. & current)
Power equation (using p.d. & current)
Unit of power ()
Unit of power ()
Watts (W)
Unit of current ()
Unit of current ()
Amps (A)
Power equation (using current & resistance)
Power equation (using current & resistance)
Unit of resistance ()
Unit of resistance ()
Ohms (Ω)