IB Physics HL Internal Assessment Example

The student's research question is focused, testable, and clearly identifies the variable they changed, the system they investigated, and the outcome they measured.

The student places the investigation in a real-world wireless charging context, which makes the study relevant and purposeful.

The student's method includes several good controls, repeated trials, and enough procedural detail for the experiment to be broadly reproduced.

The physics context is not always precise, especially where spacer thickness is treated as a material effect rather than mainly a separation effect.

Some important methodological details are missing, such as the exact generator setting, how the primary current was measured, and how stability was judged.

The measurement range is not justified well enough in relation to the coil size and the model the student later tests.

The student's raw-data table is clearly organised and makes it easy to see the repeated readings for each thickness.

The student uses repeated measurements and uncertainty treatment thoughtfully rather than ignoring scatter.

The student's processed table and graphs bring the key calculations together in a way that helps the overall trend stand out.

The uncertainty on output power is not always traceable back clearly to the raw measurements and calculations.

The input-power calculation is physically problematic because RMS voltage times RMS current does not by itself give real power in an inductive AC circuit.

There are a few consistency issues in the presentation, including a small mismatch between the worked example and the processed table and some missing input data for checking the constant power value.