calculate the effective resistance b/w P & Q
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I think you are asking about derivation of the resistance. So here's the answer.
As we know the potential difference V between the point s P and Q is directly proportional to the current flowing I, so
V = RI
where R is a constant of proportionality I.e. Resistance
So Resistance R = V/I
Graphically Resistance is the slope of the I-V graph.
As we know the potential difference V between the point s P and Q is directly proportional to the current flowing I, so
V = RI
where R is a constant of proportionality I.e. Resistance
So Resistance R = V/I
Graphically Resistance is the slope of the I-V graph.
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