5.1.3 Dielectric behaviour A dielectric material is one that is electrically insulating (nonmetallic)and exhibits or may be made to exhibit an electric dipole structure;that is,there is a separation of positive and negative electrically charged entities on a molecular or atomic level. Capacitance When a voltage is applied across a capacitor,one plate becomes positively charged,the other negatively charged,with the corresponding electric field directed from the positive to the negative.5.1.3 Dielectric behaviour A dielectric material is one that is electrically insulating (nonmetallic) and exhibits or may be made to exhibit an electric dipole structure; that is, there is a separation of positive and negative electrically charged entities on a molecular or atomic level. Capacitance When a voltage is applied across a capacitor, one plate becomes positively charged, the other negatively charged, with the corresponding electric field directed from the positive to the negative