IB Physics Sub-topic D2 Notes
This page contains our IB Physics notes for sub-topic D2. By reading each one of these notes, you will fully cover the content for IB Physics 'Electromagnetic fields'.
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Charge
Topic D.2 focuses on the basics of electricity and magnetism. Since electricity is generated by the movement of charged particles, we need to understand what charge is. If you remember, there are two types of charge.
- Positive charge – found in protons
- Negative charge – found in electrons
Neutral charge, found in neutrons, is the presence of equal amounts of positive and negative charge.
Because protons and electrons compose all matter, charge is a fundamental property of all matter. The unit of charge is denoted by q and measured in Coulombs (C), where 1 C = the charge of 6.25 x 1018 particles.
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