Daily Practice · GCSE Science

Daily Practice - GCSE Science

11th February 1999

5 questions · GCSE · 584 questions in this band

1
Energy
A kettle transfers 360000 J of energy in 150 s. Calculate its power in watts.
2
Energy Stores, Transfers and Calculations
Name four energy stores.
3
Efficiency, Power and Energy Resources
Why can no device be 100 percent efficient?
4
Electricity
A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.
5
Circuits, Resistance and Components
What happens to the total resistance when a second resistor is added in parallel, and why?

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