Electrical power, charge and energy
9th grade (Year 10 in England) · 16 questions · Common Core: NGSS.HS-PS3-1, NGSS.HS-PS3-3 · England: KS4 Combined Science: Electricity
Name
Date
Score/ 16
Question 1
A 5 W device is used for 120 s. How much energy does it transfer, in J?
AnswerJ
Question 2
A current of 2 A flows for 120 s. How much charge flows, in coulombs?
AnswerC
Question 3
An appliance on a 12 V car battery draws a current of 4 A. What is its power, in W?
AnswerW
Question 4
A 60 W device is used for 120 s. How much energy does it transfer, in J?
AnswerJ
Question 5
A current of 0.2 A flows for 60 s. How much charge flows, in coulombs?
AnswerC
Question 6
An appliance on a 12 V car battery draws a current of 0.5 A. What is its power, in W?
AnswerW
Question 7
A 2000 W device is used for 10 s. How much energy does it transfer, in J?
AnswerJ
Question 8
A current of 1 A flows for 120 s. How much charge flows, in coulombs?
AnswerC
Question 9
An appliance on UK mains (230 V) draws a current of 5 A. What is its power, in W?
AnswerW
Question 10
A 60 W device is used for 30 s. How much energy does it transfer, in J?
AnswerJ
Question 11
A current of 0.2 A flows for 60 s. How much charge flows, in coulombs?
AnswerC
Question 12
An appliance on US mains (120 V) draws a current of 5 A. What is its power, in W?
AnswerW
Question 13
A 5 W device is used for 600 s. How much energy does it transfer, in J?
AnswerJ
Question 14
A current of 0.5 A flows for 10 s. How much charge flows, in coulombs?
AnswerC
Question 15
An appliance on a 12 V car battery draws a current of 5 A. What is its power, in W?
AnswerW
Question 16
A 100 W device is used for 600 s. How much energy does it transfer, in J?
AnswerJ
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