PHYSICS – Key Formulae and Notations of Current Electricity

Students will find the section on Electricity & Magnetism the most difficult one in the entire Physics Syllabus, as compared to other sections. This section consists of the following topics:

  • static electricity
  • current electricity
  • D.C. circuits
  • practical electricity
  • magnetism
  • electromagnetism
  • electromagnetic induction

The document below summarises the key formulae and notations in Current Electricity. Students are expected to be familiarised with these formulae and notations, as students very often need to apply these concepts in their examination, usually in calculation. Please note that the concepts of this topic is not covered in the document below, but only the key formulae and notations.

Download the document:

Current Electricity Summary


SCIENCES – Practising Fundamental Concepts

One trend observed in the Preliminary papers for Sciences in schools is that setters (teachers) rarely assess students on the fundamental concepts — Preliminary papers are usually set at a higher standard, and this explains the difficulty of the examination. For lower-ability students, you may like to first practice on the IGCSE Past-year Examination Papers, as it is easier, as compared to the Singapore-Cambridge GCE ‘O’ Level Examination, not to mention school Preliminary Examinations.

Students are advised to practice questions in the following orders:

  1. IGCSE Past-Year Papers
  2. International GCE ‘O’ Level Past-Year Papers
  3. Singapore-Cambridge GCE ‘O’ Level Past-Year Papers
  4. Past-Year Preliminary Papers

We will also be uploading questions for students to practice their fundamental concepts, and also application questions.

SCIENCES – Doing Well for Sciences

Based on experience, students should be able to score well for sciences subjects if they follow the suggestions below:

  1. Pay attention in classes. By paying attention in classes, students should be able to understand the concept taught by teachers. Sometimes, teachers will have interesting facts or memory techniques to share with the class, so as to make the subject easier and more interesting.
  2. Complete all assignments. Assignments are one of the way to assess student’s understanding on a concept.
  3. Participate in all science practicals. Science practicals are designed to teach students the fundamental techniques of science practicals. However, science practicals can also help students to remember associated facts better.
  4. Clarify any doubts. After teachers have completed a topic, if students have any doubts, they should clarify with their teachers at the earliest opportunity.
  5. Source for good notes. Good notes should be available from the teachers (‘daily lecture notes’). Quality notes should also be available online.
  6. Write own notes. This will retain information effectively in the students.
  7.  Practice. As the examinations are approaching, it is likely that teachers will provide students with examination papers. Although it is likely that these papers will not be graded, it is advisable that students practice this paper. Remember the saying: Practice makes Perfect.
  8. After practising, add on to own notes. This will make the notes more informative, and the content added in may just be assessed during examinations. Students may like to have their notes checked by teacher, so as to ensure that they are learning the correct concepts.
  9. Revise. Before the paper itself, revise using personal  notes, especially for the topics that students are weaker in.

Please share with us any suggestions that you have for students taking sciences by e-mailing to us at