1. S.I. unit of resistance is ohm denoted by symbol Ω.

    S.I. unit of resistance is ohm denoted by symbol Ω.

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  2. The obstruction offered by the resistor to the flow of current through it is called its resistance. Resistance (R) = P.D. (V) / Current (I)

    The obstruction offered by the resistor to the flow of current through it is called its resistance.
    Resistance (R) = P.D. (V) / Current (I)

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  3. Because copper contains a large number of free electrons available for the conduction of electricity.

    Because copper contains a large number of free electrons available for the conduction of electricity.

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