Power in circuits (Edexcel GCSE Physics Combined Science): Flashcards
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Definition of power
Definition of power
Rate at which energy is transferred
Unit of power
Unit of power
Watt (W)
Power also indicates rate of...
Power also indicates rate of...
Work done
How is power related to current and voltage?
How is power related to current and voltage?
Directly proportional
How is power loss related to resistance?
How is power loss related to resistance?
Proportional to resistance
How is power loss related to current?
How is power loss related to current?
Proportional to square of current
Formula: Energy transferred using power & time
Formula: Energy transferred using power & time
Formula: Energy using charge & potential difference
Formula: Energy using charge & potential difference
Unit of energy transferred
Unit of energy transferred
Joules (J)
Formula: Power from energy & time
Formula: Power from energy & time
Unit of work done
Unit of work done
Joules (J)