What is the expression for displacement current?

\(\frac{1}{ε_{o}}\) [dΦ/dt] \(\frac{1}{c }\) [dΦ/dt] εο [dΦ/dt] εο c [dΦ/dt]

εο [dΦ/dt]

The expression for the displacement current : id = dQ/dt = εο [dΦ/dt]