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What the experiment measures

What the experiment measures

Fine beam tube with electron gun, Helmholtz coils, magnetic field at right angles to the beam, and circular electron path of radius r Specific charge is charge per unit mass, so for any particle it is q/mq/mq/m and its unit is C kg−1\text{C kg}^{-1}C kg−1. For the electron we usually use the magnitude eme\frac{e}{m_e}me​e​, which is about 1.76×1011 C kg−11.76 \times 10^{11} \, \text{C kg}^{-1}1.76×1011C kg−1.

Specific charge of the electron (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Specific charge of the electron (A-level only)

Step-by-step lessons on AQA A Level Physics Specific charge of the electron (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons