SPM Physics

Transformer is another important subtopic u need to master under Electromagnet. It is frequently being asked in paper1 & paper 2 SPM.

SPM checklist:,
i. u must know how to describe the structure of transformer & its working principle

ii. then u must know the difference between step-up & step-down transformer

iii. u must know how to state equation of ideal transformer,
i.e Vs/Vp= Ns/Np as well as VpIp=VsIs

iv. Question can also ask u to describe & explain about the energy losses in transformer

v. Next, u must also know the ways to improve efficiency of a transformer.

vi. Finally..u must know to solve the calculations

After reading all those checklist, go & revise your reference book for important key points.
Here i include cool videos frm the net which had explained some important part of the above checklist.