Question

If a given particle has two up quarks and one down quark, what charge will it have?

a. -2/3 E
b. 0
c. +E
d. +2/3 E

Answer 1

Each up quark has a charge of +2/3.

Each down quark has a charge of -1/3.

The sum of the charges of quarks determine the particle's electrical charge.

In this case:
2(+2/3) + 1(-1/3) = particle charge
4/3 - 1/3 = particle charge
Particle Charge = +1 E

Answer is C) +E