Understanding Electrical Conductors and Insulators

What are the two primary categories of materials when it comes to electrical conductivity?

• Insulators and conductors

• Metals and non-metals

• Solids and liquids

• Organic and inorganic materials

What is common to the atomic structure of both insulators and conductors?

• Mobile electrons

• Immobile positively charged nucleus

• Freely moving atoms

• Variable charge distribution

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How do electrons behave in conductors when connected to a power source?

• They cluster at the nucleus

• They move freely

• They exit the material

• They remain stationary

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What is a key characteristic of electrons in insulators?

• They are tightly bound and immobile

• They are only on the surface

• They can move freely

• They are absent

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What happens to extra electrons added to an insulator?

• They remain where they are placed

• They distribute evenly

• They exit the insulator

• They move to the surface

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Which materials are typically conductors?

• Metals like copper and silver

• Plastic and rubber

• Glass and wood

• Ceramics and porcelain

How does the addition of a positive charge to a conductor occur?

• By external heating

• By increasing neutron count

• By removing electrons

• By adding protons

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What demonstrates the ability of insulators to interact electrically despite their electrons being immobile?

• They can melt under high voltage

• They can polarize under an electric field

• They can conduct heat

• They become lighter

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What is the principle behind charging by induction?

• Repositioning electrons without direct contact

• Heating the material to move electrons

• Transferring charge by direct contact

• Using a magnetic field to induce charge

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What effect does a nearby charged object have on an uncharged conductor?

• It causes electrons to redistribute

• It decreases the conductor's mass

• It repels the conductor

• No effect

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