Exam-style question
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What is the relationship between the specific charge of an electron and its mass?.
- A.Specific charge increases with increasing mass
- B.Specific charge decreases with increasing mass
- C.Specific charge is independent of mass
- D.Specific charge is equal to mass
Model answer
What a good answer should say
- Specific charge decreases with increasing mass
Explanation
Why this works
The specific charge is defined as the charge divided by the mass. As the mass of the particle increases, the specific charge decreases if the charge remains constant.
For electrons, this means that their specific charge is relatively high due to their small mass.
Common mistake
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