The dielectric strength of air is 30x106 vm and that of

Question

The dielectric strength of air is 3.0x10⁶ V/m, and that of neoprene rubber is 1.2x10⁷ V/m. A certainair-gap, parallel-plate capacitor can store no more than 0.060 J of electrical energy before breaking down. How much energy can this capacitor store without breaking down after the gap between its plates is filled with neoprene rubber? Take the dielectric constantof air to be 1.00054, and of neoprene rubber to be 6.7.