1. Transformers

2. Core
-describe the construction of a basic iron cored transformer as used for voltage transformations
-recall and use the equation
(Vp / Vs) = (Np / Ns)
-describe the use of the transformer in high- voltage transmission of electricity
-give the advantages of high voltage transmission

3. Extended -describe the principle of operation of a transformer
-recall and use the equation Vp lp = Vs Is (for 100% efficiency)
-explain why energy losses in cables are lower when the voltage is high

4. Electromagnetic Induction Transformers
You should learn:
A changing magnetic field from one coil can induce an e.m.f. in another coil
The parts of a transformer
How to do transformer calculations
Why transformers are used for power distribution.

5. Parts of a simple transformer

6. Some equations = Vp x Ip=Vs x Is Power = V x I = I2R = V2/R
Secondary voltage =
number of turns on secondary
Primary voltage
number of turns on primary
And if transformer is 100% efficient
Vp x Ip=Vs x Is
Power = V x I = I2R = V2/R