A Level Physics: 7 Common Mistakes Students Make

A Level Physics rewards precision. Small, avoidable mistakes are often the difference between a B and an A.

1. Forgetting Units

Always include units in your final answer — many mark schemes deduct a mark for a numerically correct answer with no unit.

2. Sign Errors in Vectors

Be consistent with your chosen positive direction throughout a whole question, especially in mechanics and electromagnetism problems.

3. Rounding Too Early

Rounding intermediate values before your final answer can introduce enough error to fall outside the accepted range. Keep full precision until the last step.

4. Not Showing Working

Even if your final number is correct, missing working can cost method marks — and if the final answer is wrong, working is often the only way to get partial credit.

5. Misreading Graph Scales

Always double-check the axis units and scale before reading values off a graph.

6. Confusing Similar Formulas

Keep a clear formula sheet and test yourself on which formula applies to which scenario, not just memorizing them in isolation.

7. Poor Time Management

Practice past papers under strict timing so you learn to allocate time proportionally to marks available.