Daily Practice · GCSE Science

Daily Practice - GCSE Science

10th June 1998

5 questions · GCSE · 584 questions in this band

1
Energy
A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
2
Energy Stores, Transfers and Calculations
What happens to the energy described as 'wasted' in a transfer?
3
Efficiency, Power and Energy Resources
Define power and give its unit.
4
Electricity
A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
5
Circuits, Resistance and Components
Define electric current.

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