Which of the following groups of materials contain only conductors?
(a) copper, zinc, glass, plastic
(b) zinc, cotton, iron, plastic
(c) copper, gold, silver, iron
(d) glass, wood, cotton, air

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Solution

(c) copper, gold, silver, iron

Conductors are objects that allow electricity to pass through them. Copper, gold, silver and iron are good conductors of electricity.

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Which of the following groups of materials contain only conductors? (a) copper, zinc, glass, plastic (b) zinc, cotton, iron, plastic (c) copper, gold, silver, iron (d) glass, wood, cotton, air

(c) copper, gold, silver, iron Conductors are objects that allow electricity to pass through them. Copper, gold, silver and iron are good conductors of electricity.

Which of the following groups of materials contain only conductors?
(a) copper, zinc, glass, plastic
(b) zinc, cotton, iron, plastic
(c) copper, gold, silver, iron
(d) glass, wood, cotton, air

(c) copper, gold, silver, iron

Conductors are objects that allow electricity to pass through them. Copper, gold, silver and iron are good conductors of electricity.