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 Physics Edexcel notes for Uni 2: Electricity Notes can be downloaded from the link given below: Physics Edexcel Unit 2 notes download here   Notes excerpt: UNIT 2: ELECTRICITY Current: is defined as flow of charges through the closed circuit. When current is more, the flow of charges is more. Unit of measurement is Ampere (A-amp). Voltage: is defined as the electrical pressure which drives the electrical charges around the closed circuit. Higher voltages have high amount of current to be driven and hence they are more hazardous. In diagram Circuit A, has one cells and so the current is driven at slow rate and light is dull whereas in circuit B, there ae two cells and so current is driven more quickly and so the lamp is much brighter. • Electric shocks can occur as a result of high voltage delivered. This is very painful, and can even cause death. Main ’ s supply: is where electricity is provided for home and voltage of mains supply can be wither 120 V or 230...

 Past papers for unit 1  Unit 1:  Forces and motion  The paper has question from paper 1 and 2 from higher tier. You can download the paper from the link given below: Click here to download the paper . Marking scheme is available for free download just comment and get Marking scheme emailed to your inbox within 24-48 hours. Weight and mass: The strength of the Earth’s gravitational field, g, is 10 N/kg.The weight, W, of an object is the force that gravity exerts on it, which is equal to the object’s mass × the pull of gravity on each kilogram . The size of g also gives us the gravitational acceleration, because: Weight is the pull of gravity on an object. Weight is a force measured in newtons, N. The weight of an object depends on the gravitational field strength of a planet.The mass of an object is always the same anywhere and is not affected by a planet’s gravitational pull; it depends on the amount of matter in the object. Mass is measured in kilogram...

 Notes for Physics Edexcel unit 4 Energy resources and transfer.  have been attached:  click here for unit 4 notes  Notes excerpt: Unit 4: Energy resources and energy transfer   Energy stores and systems Definition of a system: it can be defined as an object or a group of objects that work together. For example: • Upward throwing of an object: When a ball is thrown upwards, immediately there is kinetic energy in store. At the highest point, the ball has stored energy in form of (Gravitational Potential Energy). Before reaching its original position the b1all again has kinetic energy. • Kettle of boiling water: Using an electric kettle, the thermal energy in water is increased, which helps increase the temperature of water. So, the warm/hot water has more thermal energy than cold water. • Coal burning: The coal has chemical energy in store which is slowly converted to thermal energy which helps used for the purpose. Chemical energy is transf...