The impact of anomalous radial diffusion due to turbulent magnetic fields on the electrical conductivity of a toroidal plasma is investigated. The problem is solved by evaluating an appropriate three-dimensional response function for the current density. This yields an analytic expression of the turbulent electrical conductivity including trapped particle effects. In the pressure a gradient region, the conductivity is generally enhanced with respect to the neoclassical one. This results in an anomalously low plasma resistance-a trend observed in many tokamak experiments. The analytic expression is shown to be in very good agreement with numerical calculations using a three-dimensional bounce averaged Fokker-Planck code. By a similar method, the toroidal response function for radiofrequency current drive in the presence of magnetic turbulence is also found