Exam-style question
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What is the charge of a down antiquark?.
- A.+1/3
- B.-2/3
- C.0
- D.-1
Model answer
What a good answer should say
- The charge of a down antiquark is +1/3.
Explanation
Why this works
The down antiquark has a charge of +1/3, which is the opposite of the down quark's charge of -1/3, reflecting the properties of particle-antiparticle pairs.
Common mistake
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