8.1 : Analysing the Magnetic Effect of a Current-Carrying Conductor

*Electromagnet

                                             

When current flows in the solenoid, a magnetic field is produced.

The magnetic field then magnetises the iron core,thus causing it to be an electromagnet.

                            

*Magnetic field in Different Types of Conductors

*Factors Affecting the Strength of Magnetic Field of an Electromagnet

8.2 :Understanding the Force on a Current-carrying Conductors in a Magnetic Field

*Fleming's Left-hand Rule

                

*Factors Affecting Magnitude of Force on a Current-carrying conductor

*Turning Effects of A Current-carrying Coil in A Magnetic Field

8.3 : Analysing Electromagnetic Induction

*Induced e.m.f. and Induced Current

*Fleming's Right hand Rule

*Lenz's Law Use Lenz's Law to determine thef. polarity of the

induced e.m.f. use Fleming's right hand grip rule to determine

that direction of current flow

                        

*Magnitude of Induced Current

Faraday's Law Faraday's law states that the magnitude of the

induced e.m.f is directly proportional to the rate of change of magnetic flux linked to the conductor

                                

*Factors Affecting the Magnitude of Induced e.m.f. in Solenoids

*Application of Electromagnet Induction

*Rotation of Coils in Generators

*Alternating Current and Direct Current

8.4 : Analysing Transformers

*Step-up and Step -down Transformers

*Relationship between Np,Ns,Vp and Vs  

*Relationship between Output Power and Input Power

An ideal transformers ( with efficiency 100% ) has equal outputpower and input power,or

                          

*Energy Losses in a Transformer

8.5 : Understanding the Generation and Transmission of Electricity.

*Generation of Electricity

*Transmission of Electricity

* The National Grid Network