Physical quantities Physical quantity is a property of an object or substance that can be measured using an
Category: Physics
Density notes
Density of liquids Density is the mass per unit volume The units of density is g/cm3 or kg/m3
Force
Weight and Mass It is the force acting on mass due to gravity. It is the pull of
Current, electricity and resistance
Resistance It is the opposition of the flow of current. It is measured in Ohms (Ω). When applying
Household Electricity
Uses of electricity in the home Lighting Heating Powering electrical devices e.g. motors Electrical Power Is the
Static Electricity
Electrostatic charging Friction between objects can cause electrons to be transferred from one object to another. When the
Hydro and thermal power generation
Hydro and thermal power generation The processes involved in the production of electricity at power stations depend on
Generators
Generator Notes Generator effect When a conducting wire is moved through a magnetic field, a voltage is generated
Magnetism
Electromagnetism Demonstrating magnetic field in a conductor current carrying A large coil with many turns of insulated copper