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If the thickness of the material increases, what happens to the dielectric strength?

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in Basic Electrical Engineering by (88.7k points)
If the thickness of the material increases, what happens to the dielectric strength?

(a) Increases

(b) Decreases

(c) Remains the same

(d) Becomes zero

The question was asked during an online exam.

My question is based upon Dielectric Strength topic in section Capacitance and Capacitors of Basic Electrical Engineering

1 Answer

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Best answer
Right option is (b) Decreases

The best explanation: Dielectric strength is the potential gradient required to cause a breakdown in the material. Potential gradient is the ratio of voltage and thickness. Hence as thickness increases, dielectric strength decreases.

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