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What is Ohm's law ? How is it represente...

What is Ohm's law ? How is it represented graphically ? Derive an expression for the resultant resistance of a series combination of resistors.

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Knowledge Check

  • Ohm's law expressed as E = IR

    A
    can never be applied to AC
    B
    applies to AC in the same manner as to DC
    C
    always applies to AC circuits when Z is substituted for R
    D
    tells us that ` underset(eff)(E) `= 0.707 (` underset(max)(E) `) for AC

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