2018 | physics-tuition-sg

Evan Toh

Nov 41 min read

What is the resistance of Y when its length is doubled and diameter three times larger? 2018PPp1q31

When question states that radius or diameter is increased by 3 times, that note that cross-sectional area does not increase by 3 times....

Evan Toh

Oct 201 min read

Video 02 Finding resultant force from vector diagram provided

(1) 2003PPq1q7 (0 min to 2.42 min) Ans: Option A (2) 2023PPp1q4 (2.47 min 3.54 min) Ans: Option C (3) 2018PPp1q2 (3.45 min to 6.22 min)...

Evan Toh

Oct 201 min read

Video 01 How to find resultant force of two or three forces (without drawing vector diagram)

Below are some examples of questions that involve finding the resultant force due to two or three forces. Below are the questions in the...

Evan Toh

Dec 31, 20231 min read

Determine the motion of the particles on transverse wave

Instead of imaging how the particles will move and guess their motion, there is a technique which can help you to determine that. In...

Evan Toh

Dec 31, 20231 min read

2013SPp1q17 What is the new P when V across resistor is doubled? Similar 2018PPp1q31

Answer: Option C View the videos below to learn how to solve it. There are more than one method. Alternatively, you may put values to...