E = Eo/k k is dielectric constant

The best example of a dielectric with good thermal conduction is diamond, which is almost a perfect dielectric, but also has a thermal conductivity (up to 41kW·m−1·K−1) that is better than most metals (e.g. silver has a thermal conductivity of 0.430kW·m−1·K−1).

From the formula, E = V/d, where V is the voltage and d is the distance, it can be seen that the electric field and the distance are inversely related. Thus, as the distance between the parallel plate capacitors is reduced to half, the electric field is increased twice. Moreover, is a dielectric constant k is introduced, the capacitance will increase. This direct relationship can be seen in the formula, C = [k(Єo)A]/d, where k is the dielectric constant. The lowest possible value of k is 1; and that is when the dielectric is a vacuum. Other dielectric constants are greater than 1, such as teflon which has a dielectric value of 2.1 As the capacitance increases, the electric field also increases. (E = 1/2(CV^2))

high and high

For an insulating material dielectric strength and dielectric loss should be respectively high or low