Power Ratings (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What does the power rating of an appliance represent?
What does the power rating of an appliance represent?
Maximum power it can safely operate at
What does an appliance's power rating tell us?
What does an appliance's power rating tell us?
Maximum energy transferred per second
Does a higher power rating mean more useful energy is transferred?
Does a higher power rating mean more useful energy is transferred?
No, it doesn't necessarily mean that
How does a high power rated appliance compare in efficiency to a low power rated one?
How does a high power rated appliance compare in efficiency to a low power rated one?
It may not be as efficient
Which equation links energy, charge and potential difference?
Which equation links energy, charge and potential difference?
In , what is measured in?
In , what is measured in?
Coulombs (C)
Which equation shows how to calculate power using voltage and current?
Which equation shows how to calculate power using voltage and current?
In , what is measured in?
In , what is measured in?
Watts (W)
Which equation calculates power using current and resistance?
Which equation calculates power using current and resistance?
When should you use the equation to calculate power?
When should you use the equation to calculate power?
When you don't know potential difference
In , what is measured in?
In , what is measured in?
Ohms (Ω)