Common Errors

2017

Incomplete thoughts like question 11a

Misreading the question like 13c

Misinterpretation of variables 14b

Missing out key words e.g. exponentially (15a), E = mc² in (16d)

Not using the graph feature or using the wrong one(tangent, area) like in 17b

2018

Not using equations to explain when it can help 11bi

Glazing through the questions because of too many words 11c

Not using the graph feature or using the wrong one(tangent, area) like in 16b

Not drawing a quick sketch where would have been useful 18biv

2020

Understanding the concept but doing a little too much and missing it along the way 11b

Literally ignoring my intuition 14a

2021

Me casually acting like I don't know ratios 3

Not using the graph feature or using the wrong one(tangent, area) like 12bi, 13b

Understanding the concept but answering the question wrongly 17c

2022

When you’ve done so much complex stuff and you maul over the little ones. I’ve been struggling with basic mechanics stuff for a while now. They usually have a twist to it but those are the simplest equations (power, work done against, resistive forces etc) 11a

That one random electricity question with a complex circuit. Always catches me off guard 14b

Knowing the question requires more explanation but you leave it 16c

Thanks to this question I now know Area = thickness * width 18a

2024

Using the wrong conservation laws 12b

Missing out key words or calculations e.g. exponentially/time constant 16c

Confusing the motor and generator effect 18a

Knowing the question is an application question but not attempting it 18ci

Solutions

1. Have I underlined the command words?

2. Do I know what’s actually being asked?

3. Is there a graph feature I should use? Slope or area?

4. Can I back this up with a specific equation or law?

5. Is there a keyword I need to mention?

After answering:

• Did I write enough to explain the reasoning?

• Did I miss anything obvious or misinterpret a variable?