Physics, 23.12.2019 17:31 ttkkbffl

Which best describes the materials that make up an electrical cord?

1. a metallic conductor lacking free electrons surrounded by a rubber insulator with free electrons
2. a metallic conductor with free electrons surrounded by a rubber insulator lacking free electrons
3. a metallic insulator with free electrons surrounded by a rubber conductor lacking free electrons
4. a metallic insulator lacking free electrons surrounded by a rubber conductor with free electrons

Answers: 2

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Answer from: motorxr714

a metallic conductor with free electrons surrounded by a rubber insulator lacking free electrons

Explanation:

A conductor is defined as a substance through which an electric current is able to flow freely without causing any resistance due to the availability of free electrons. Example: silver, copper, gold etc are all good conductors of electricity.

Whereas an insulator is a substance which causes high resistance to the flow of free electrons. Example: plastics, styrofoam, rubber etc are all insulators.

Thus,a electric cord which needs to conduct electric current is made up of metallic conductor with free electrons and is surrounded by an insulator to avoid electric shocks.

Answer from: NeverEndingCycle

Whereas an insulator is a substance which causes high resistance to the flow of free electrons. Example: plastics, styrofoam, rubber etc are all insulators.

Thus,a electric cord which needs to conduct electric current is made up of metallic conductor with free electrons and is surrounded by an insulator to avoid electric shocks.

Explanation:

Answer from: Quest

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

happy to

pls mark as brainliest.

Answer from: Quest

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.

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Which best describes the materials that make up an electrical cord?

1. a metallic condu...