IB Physics SL Extended Essay Example

The student's investigation has a clear purpose and stays focused on one independent variable and one measurable outcome.

The student explains the physical context well enough that the reader can follow why coil misalignment matters.

The student's method includes repeated trials, controlled variables, and enough procedural detail to make the investigation repeatable.

Some method choices are not fully justified, especially where measurement validity and control of the setup could be stronger.

The operational definition of displacement and the stability of the resonant condition are not explained with enough precision.

A few procedural details are present but not yet complete enough to show fully effective selection of methods.

The student uses a solid range of relevant electromagnetic terms such as resonance, mutual inductance, coupling coefficient, reactance, and efficiency.

The student shows a good grasp of the underlying physics and connects it to the behavior of the apparatus.

Equations and units are generally introduced clearly enough for the reader to follow the calculations.

Some terminology is used imprecisely, especially where reactance is treated as resistance.

A few labels and component values are inconsistent, which weakens confidence in parts of the explanation.

The student's physical explanations are mostly relevant, but not always precise enough to show consistently secure understanding.