Physics (AS & A Level) · Oct / Nov 2023 · Paper 13 · Question 40

Some particles are a combination of three quarks. Which combination of quarks does not result in a particle with a charge of either +1.6 × 10⁻¹⁹ C or zero?

1. Aup, down, down
2. Bup, strange, strange
3. Cup, up, down
4. Dup, up, up

As printed in the paper