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A student measures the terminal potential difference (V) of a cell (of emf and internal resistance r) as a function of the current (I) flowing through it. The slope and intercept of the graph between V and I, then, respectively, equal
detailed solution
Correct option is B
According to Ohm's law, dVdI = −rand V = ε if I= As V+Ir=e∴ Slope of the graph =−r and intercept=εTalk to our academic expert!
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An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of (4/3) and (2/3), then the ratio of the currents passing through the wires will be
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