Question

The nuclear particle consisting of one down quark and two up quarks has what kind of charge?

Answer 1

+e

Step-by-step explanation:

The charge of an up quark is:

`q_u = +(2)/(3)e`

The charge of a down quark, instead, is:

`q_d = -(1)/(3)e`

In this problem, we have a particle consisting of 1 down quark and 2 up quarks, Therefore, the net charge of the particle will be

`q=1(q_d)+2(q_u)=1(-(1)/(3)e)+2((2)/(3)e)=-(1)/(3)e+(4)/(3)e=(3)/(3)e=+e`

So, the particle has a charge of +e.