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26 March, 06:55

Which of the following statements are true?

1. Good conductors of electricity have larger conductivity values than insulators.

2. A material that obeys Ohm's law reasonably well is called an ohmic conductor or a linear conductor.

3. Semiconductors have resistivity values that are larger than those of insulators.

4. The resistance of a conductor is proportional to the conductivity of the material of which the conductor is composed.

5. The resistance of a conductor is proportional to the resistivity of the material of which the conductor is composed.

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  1. 26 March, 07:14
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    Good conductors of electricity have larger conductivity values than insulators.

    A material that obeys Ohm's law reasonably well is called an ohmic conductor or a linear conductor.

    The resistance of a conductor is proportional to the conductivity of the material of which the conductor is composed.

    Answer: Options 1, 2 and 4.

    Explanation:

    In physics and electrical engineering, a conductor is an article or kind of material that permits the progression of charge in at least one headings. Materials made of metal are basic electrical conduits.

    Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. Most atoms hold on to their electrons tightly and are insulators.
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