what is ohm's law? verify it by graphical
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A law stating that electric current is proportional to voltage and inversely proportional to resistance.
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To establish the current-voltage relationship, it is to be shown that the ratio V / I remains constant for a given resistance and therefore a graph between the potential difference(V) and the current (I) must be a straight line. Here R is a constant. This gives the resistance per unit cm.
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