Solve this multiple-choice question and choose the correct option.

Materials in appliances: Why is mica used inside devices such as electric irons and toasters? Identify the key property that makes mica suitable as spacers/insulators near hot elements. Choose the correct option.

Difficulty: Easy

It is an excellent conductor of electricity
It is a good electrical insulator with high heat resistance (high dielectric strength)
It has very high magnetic permeability
It reacts to produce cooling

Correct Answer: It is a good electrical insulator with high heat resistance (high dielectric strength)

Explanation:

ConceptMica is a sheet silicate with excellent electrical insulation, high dielectric strength, and thermal stability, ideal near heating coils.

Final AnswerIt is a good electrical insulator with high heat resistance (high dielectric strength)

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