Q25 · 2022 · Paper 1Simple familiar2 marks
QUESTION 25 (2 marks)
Describe how electromagnetic radiation is propagated by the interaction between electric and magnetic fields.
WORKED SOLUTION
2 marksQCAA guide · typeset solution
ANSWER
See worked solution below.
Worked solution
Oscillating charged particles induce a magnetic field. This
subsequently induces an electric field perpendicular to the
magnetic field.
• describes the production of an induced magnetic
field [1 mark]
• describes formation of an induced electric field,
perpendicular to the magnetic field [1 mark]
One QCAA sample method typeset for web; criterion wording is adapted from the official marking guide.
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