Electromagnetism

Lesson Order

• 4-ELM-01 Electric Motors.
• 4-ELM-02 Left hand rule.
• 4-ELM-03 Electromagnetic induction.
• 4-ELM-04 Transformers.
• 4-ELM-05 Work done.
• 4-ELM-06 Kinetic and potential energy. Conservation of energy.
• 4-ELM-07 Power
• 4-ELM-08 Revision and test

Topics covered

• The difference between scalars and vectors
• Adding forces along a line
• Recall and use of Moment = force x perpendicular distance from pivot
• The weight of a body acts through the centre of gravity
• The principle of moments
• The upward force on a light beam varies with the position on a heavy object placed on the beam
• How extension varies with applied force for helical springs, metal wires and rubber bands
• Hooke's Law
• Elastic behaviour and plastic deformation
• Pressure = force / area
• Density = mass / volume
• Direct measurement of the density of solid, liquid and gas