Question

Since mica is a bad conductor of heat and electricity, it is used in the _______________ industry.

• A. Telephone and telegraph
• B. Plastic and textile
• C. Electrical cable and lamp
• D. Glass and aluminium

Answer 1

The correct option is A Telephone and telegraph

Mica has the exclusive combination of uniform dielectric steadiness, capacitance stability, enormous dielectric power, high Q factor and lower power loss, high electrical resistance and low temperature coefficient. It is highly regarded for its resistances to arc and corona discharge without causing any lasting injury.