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2024 Pure Physics 6091 P3 Section B Q3 - Mechanics Set-up

Evan Toh

5 days ago0 min read

2024 Pure Physics 6091 P3 Section B Q3 - Mechanics Set-up

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2024 Pure Physics 6091 P3 Section A Q2 - Electricity Set-up

Evan Toh

5 days ago0 min read

2024 Pure Physics 6091 P3 Section A Q2 - Electricity Set-up

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2024 Pure Physics 6091 P3 Section A Q1 Mechanics (set-up)

Evan Toh

6 days ago0 min read

2024 Pure Physics 6091 P3 Section A Q1 Mechanics (set-up)

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Radioactivity - Questions on Penetrating Ability and Applications

Evan Toh

Nov 71 min read

Radioactivity - Questions on Penetrating Ability and Applications

2002PPQ38, 2003PPQ38, 2005PPQ37, 2006PPQ38, 2007PPQ39 Answer: Option B Answer: Option D Answer: Option B Answer: Option C Answer: Option...

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Copper spheres P and Q, P has larger volume. What quantity is the same? 2020PP01q7

Evan Toh

Nov 41 min read

Copper spheres P and Q, P has larger volume. What quantity is the same? 2020PP01q7

This question is very straight forward. As both P and Q are copper, the density will be the same. But many are unsure of KE. Let look at...

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What happens to frequency and speed of water wave as it goes to shallow region? 2019PPp1q23

Evan Toh

Nov 41 min read

What happens to frequency and speed of water wave as it goes to shallow region? 2019PPp1q23

Once the wave is produced, the frequency remains constant. Hence speed V of the wave is directly proportional to the wavelength of the...

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Energy dissipated by resistor in one period based on CRO waveform 2020PPp1q40

Evan Toh

Nov 41 min read

Energy dissipated by resistor in one period based on CRO waveform 2020PPp1q40

Answer: Option C

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2007PPp1q28 2019PPp1q33 - Which V-I readings are for torch lamp?

Evan Toh

Oct 251 min read

2007PPp1q28 2019PPp1q33 - Which V-I readings are for torch lamp?

2019PPP1Q33 Ans: Option B 2007PPP1Q28 Ans: Option B Torch lamp or bulb is a non-ohmic conductor . The V-I graph has an increasing...

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2020PPp1q9 moments – Find force P acting on stick by shoulder

Evan Toh

Oct 221 min read

2020PPp1q9 moments – Find force P acting on stick by shoulder

Using the concepts that POM, we know 1) Ma = Mc 2) net force on the stick is 0N. Most of us will most likely to take pivot about P as...

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2016PPP1Q40 – Voltage and Power of Bulb Y when X is switched off - 2013PPP1Q40 heaters

Evan Toh

Oct 221 min read

2016PPP1Q40 – Voltage and Power of Bulb Y when X is switched off - 2013PPP1Q40 heaters

2016PPP1Q40 Solutions: Option C [There is another similar question in 2013 Nov Pure Physics P1Q40. The answer is Option C too. Refer to...

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Using P = I^2R and P = V^2/R to explain which component uses the highest power or energy.

Evan Toh

Oct 211 min read

Using P = I^2R and P = V^2/R to explain which component uses the highest power or energy.

Instead of P = IV to explain, it might be easier to explain using P = I^2R when the components are connected in series where current I is...

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When a thermistor is connected in series with a fixed resistor, how to explain the p.d. varies as resistance temperature changes?

Evan Toh

Oct 211 min read

When a thermistor is connected in series with a fixed resistor, how to explain the p.d. varies as resistance temperature changes?

When two components are connected in series, where one is a fixed resistor and the resistance of the other can vary (e.g. thermistor,...

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2012PPp1q7(c) - Determine the p.d. between points A and C

Evan Toh

Oct 210 min read

2012PPp1q7(c) - Determine the p.d. between points A and C

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Video 02 Finding resultant force from vector diagram provided

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)...

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Direction of Frictional Force on Tyre or Wheel

Evan Toh

Oct 161 min read

Direction of Frictional Force on Tyre or Wheel

For these type of questions, it is important to identify which tyre/wheel is connected/powered by the engine or the person. On each tyre...

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2012PPp2q07 - Find the p.d. across A and C

Evan Toh

Oct 151 min read

2012PPp2q07 - Find the p.d. across A and C

Instead of the usual finding of potential difference across a component, in this question, you are required to find the p.d. across two...

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PP2017Q11 Using P=I^2R and P=V^2/R to explain which has higher power

Evan Toh

Jan 311 min read

PP2017Q11 Using P=I^2R and P=V^2/R to explain which has higher power

Resistors may be connected in series or parallel. When asked which resistor has higher power (hence higher energy), in general we will...

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2013PPP1Q30 – Direction of the electric field around a negative charge

Evan Toh

Jan 311 min read

2013PPP1Q30 – Direction of the electric field around a negative charge

Ans: Option A View the video tutorial for the explanation:

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PP N2010 P1 Q4 Two objects same size and shape but one is heavier. Motion when both released

Evan Toh

Dec 31, 20231 min read

PP N2010 P1 Q4 Two objects same size and shape but one is heavier. Motion when both released

Solutions: Option C When a body is released from rest, the only force acting on the body is its weight due to gravity . Both bodies...

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Identifying what lens, focal length and image from 2 rays – PP2010P1Q23 and SP2014P1Q11

Evan Toh

Dec 31, 20231 min read

Identifying what lens, focal length and image from 2 rays – PP2010P1Q23 and SP2014P1Q11

These 2 questions are actually the same. Q23 is from 2010 Pure Physics P1 while Q11 is from 2014 Sci Physics P1. Take a look at these 2...

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