[J2] Term 2 Week 4 (13-19 Apr) Updates/ Debrief

[J2 Physics PMCians] All about Alternating Current


What we did in 2 hours:

During our last Live Tutorial, we reviewed the ideas in Alternating Current (AC), specifically that since the current and voltage were constantly changing, we had to calculate the Average Power. That introduced us to the idea of using the Root-Mean-Square (r.m.s.) values for current and voltage.

What you take home:

Daily Dose for A.C. 

Please download and print the Daily Dose for your revision :


Special Mention:

For our next lesson, we will be exploring the new world of Quantum Physics. 

As the concepts are definitely new and require some adjustments to what we’ve learnt so far, please ensure that you watch and complete the Webcast Lecture on Quantum Physics Lesson 1 before our next tutorial.


Till then, enjoy the HBL and stay safe!

[J2 Maths PMCians]


What we did in 2 hours:


Moving on to distributions, we look at the first one, Binomial Distributions. Be familiar with the conditions to model one as well as its definitions, and apply basic skills to simple problems. Also be familiar with the formulae and how to find expectation and variance when needed.



Discrete Random Variables can be quite a handful when a complicated context is involved. Remember, its more of breaking down the context, since the formulae in this chapter are all quite basic.

What you take home:

In this current learning format, your materials will be uploaded to your folders at pmc.sg/lecture , so do check regularly.

Special Mention:

Our LIVE challenge this week is on binomial distribution. The chapter on its own has limited difficulty, so we’ll be competing on speed this week. Warm up before your challenge!


See You (online) and Stay Healthy!

Your Friendly Math Tutors

[J2 Chemistry PMCians] 


What we did in 2 hours:

[Bishan] This week, we have completed Carboxylic Acids & Derivatives. In specifics, we looked at

  1. Hydrolysis and Reduction of Esters
  2. Acidity of Organic Compounds
  3. Deductive Question involving COOH & COCl


[Paya Lebar/Beauty World] Let us go back to physical chemistry and start the first of the three-part series on Acid Base Equilibrium. We have looked at

  1. Three definitions of acids & bases
  2. Strength of acids & bases
  3. Self ionisation of water
  4. Calculation of pH – strong reagents
  5. Calculation of pH – weak reagents

What you take home:

The solutions to selected structured questions and Everything you need to know series are found here:

Carboxylic Acids & Derivatives: https://tinyurl.com/ufymjlz

Special Mention:

[Bishan] Next lesson, we will begin our final organic chemistry chapter – Organic Nitrogen Compounds. Do ensure you have the lecture notes 1 for lesson.


[Paya Lebar/Beauty World] Let us continue to look at calculating pH for hydrolysis of salts and buffer solutions.


See you in class next week and take good care of yourself!

Mr Leong

Home-Based Learning (HBL)

1) One Weekly PMC Lecture Webcast (www.pmc.sg/lecture)

2) One Weekly PMC LIVE Tutorial (www.pmc.sg/live)