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8. Tungsten , a Poor Conductor, Is Used as a Filament in Some Lig! A.allows Electrons to Flow Easily B. Allows Protons to Flow Easily

Question

8. Tungsten , a poor conductor, is used as a filament in some lig! A.allows electrons to flow easily B. allows protons to flow easily C. resists the flow of electrons D. resists the flow of protons

Solution

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Answer

C. resists the flow of electronsTungsten is used as a filament because it has a very high melting point and its *resistance* to the flow of electrons causes it to heat up and glow when current passes through it. A good conductor *allows* electrons to flow easily. Protons don't flow in typical electrical circuits.