What is the numerical value of charge energy and spin of up and down quark.

 Q.No.15: - What is the numerical value of charge energy and spin of up and down quark.

Ans: - For up quark

Spin    =    1/2    ;   charge     = +2/3    energy (Mc² in MeV) ≈ 4 MeV

For down quark

Spin    =    1/2    ;   charge     = -1/3     energy (Mc² in MeV) ≈ 5 MeV