In terms of e, what is the charge of a particle whose quark composition is uds?
A) 0
B) 1
C) −1
D) 2
E) −2

Question

Quizplus · Accepted Answer

The quark composition of a particle is given as uds. The charge of a u (up) quark is +2/3 e, the charge of a d (down) quark is -1/3 e, and the charge of an s (strange) quark is -1/3 e. Adding these together, (+2/3) + (-1/3) + (-1/3) = 0. Therefore, the charge of the particle is 0.

In Terms of E, What Is the Charge of a Particle