Daily Practice

GCSE Science

4th April 1991

5 questions · GCSE · 584 questions in this band

1
Energy
A 5.0 kg object is lifted 3.0 m. Calculate its gain in gravitational potential energy (g = 9.8 N/kg).
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 current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
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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