Daily Practice · GCSE Science

Daily Practice - GCSE Science

30th September 1995

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
A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
3
Efficiency, Power and Energy Resources
Give the equation for efficiency in terms of energy.
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
Two 4 ohm resistors are connected in series. Calculate the total resistance.

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