An engineer is testing a Stirling engine, where gas inside a sealed cylinder is heated by an external heat source.
The gas in the cylinder is heated, increasing its temperature while its volume is kept constant. Explain, in terms of particles, why the pressure of the gas inside the cylinder increases.
State the equation linking pressure, force, and area.
The heated gas reaches a pressure of 1.85 MPa. The piston has a cross-sectional area of 0.0125 m2. Calculate the force exerted by the gas on the piston.
51 exam-style questions on Edexcel IGCSE Physics Ideal gas molecules. Each one has a worked solution and a mark scheme showing where the marks go.