Power Ratings (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the power rating of an appliance?
What is the power rating of an appliance?
The maximum power it can safely operate at
What does the power rating tell us about an appliance?
What does the power rating tell us about an appliance?
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
Can a high power rating appliance be less efficient than a low power one?
Can a high power rating appliance be less efficient than a low power one?
Yes, it may be less efficient
Calculate energy transferred if C and V using .
Calculate energy transferred if C and V using .
J
In the formula , what is the unit for charge ?
In the formula , what is the unit for charge ?
Coulombs (C)
Calculate power if V and A using .
Calculate power if V and A using .
W
Calculate power if A and Ω using .
Calculate power if A and Ω using .
W
When should you use the formula instead of ?
When should you use the formula instead of ?
When you don't know potential difference
In the formula , what is the unit for power ?
In the formula , what is the unit for power ?
Watts (W)