Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
10th February 2025
- 1Efficiency, Power and Energy Resources
A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
- 2Electricity
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.
- 3Circuits, Resistance and Components
In a parallel circuit, how do the branch currents relate to the total current?
- 4Mains Electricity, Power and Energy
State the potential difference and frequency of the UK mains supply.
- 5Particle Model of Matter
A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
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