9. Which group is composed of insulator only?
A. aluminum foil, iron nail, rubber
B. brass, mica, steel
C. glass, plastic, rubber
D. leather, pins, copper
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9. Which group is composed of insulator only?
A. aluminum foil, iron nail, rubber
B. brass, mica, steel
C. glass, plastic, rubber
D. leather, pins, copper
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Insulator
Insulator is an object that does not easily allow an electron (heat or electricity) to pass through it.
C. Glass, plastic, and rubber is the group composed of insulator only.
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