Explanation: The breakdown voltage rating of a capacitor is the maximum voltage it can safely withstand before the dielectric material between its plates fails and conducts electricity. This critical rating is determined by two main factors: * **The type of dielectric material (A):** Different insulating materials possess unique *dielectric strengths*. This intrinsic property dictates how much electric field (volts per unit thickness) a material can withstand before breaking down. Materials like mica or ceramic have higher dielectric strengths than air or paper, allowing them to withstand higher voltages for the same thickness. * **The thickness of the dielectric material (B):** For any given dielectric material, a thicker layer between the capacitor plates provides more insulation. This means a greater voltage can be applied across the plates before the electric field intensity within the material reaches its breakdown threshold. Thus, both the material's inherent insulating capability and its physical dimensions directly influence the capacitor's breakdown voltage.