Question

Among the common dielectric materials, the highest dielectric strength is possessed by (a) mica (b) transformer coil (c) pvc (d) polyethylene

Answer 1

$\huge\bold{HEY:)-}$

Mica

Answer 2

The highest dielectric strength is possessed by (a) mica.

• Dielectric strength is a measure of the maximum magnitude of voltage that a material can withstand without undergoing an electric breakdown in presence of an electric field.
• It is measured in volts per meter.
• Dielectric constant k = ε / εο. Here ε and εο are the permittivities of the substance  and of the free space respectively.
• The dielectric strength of insulators > conductors.
• Out of mica, transformer coil, PVC, and polyethylene, mica is the best electrical insulator.