Daily Practice
GCSE Science
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18th October 1991
- 1Energy Stores, Transfers and Calculations
Define specific heat capacity.
- 2Efficiency, Power and Energy Resources
A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
- 3Electricity
A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
- 4Circuits, Resistance and Components
In a parallel circuit, how do the branch currents relate to the total current?
- 5Mains Electricity, Power and Energy
State the potential difference and frequency of the UK mains supply.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1991, including the monthly compilation PDF.