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# A cell of negligible resistance and e.m.f. 2 volt is connected to a series combination of 2, 3 and 5 ohms. The potential difference across the 3 ohm resistance will beA. 6 VB. 3VC. $\dfrac{2}{3}V$D. 0.6 V

Last updated date: 13th Jul 2024
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Hint: The effective resistance in series connections of the resistor will be. When resistors are connected in series, the current through each resistor will be same and potential difference is not same while in parallel connection, potential difference across each resistor will be same and current will be different.

In a series connection containing two resistors, the voltage across the two ends of the circuit is directly proportional to the effective resistance in the circuit, i.e. $V \propto R$
$R = 2 + 3 + 5 = 10$ ohms
As the 3 ohms resistor constitutes only the three-tenths of the total resistance, so the voltage across the 3 ohms resistor will be $\dfrac{3}{{10}} \times 2 = 0.6\,V$