If 4.1 × 1021 electrons pass through a 40 Ω resistor in 5 min, what is the potential difference across the resistor? The fundamental charge is 1.602 × 10−19 C . Answer in units of V

Potential difference across resistor will be 87.66 volt

Explanation:

We have given number of electrons

Charge on one electron

So total charge

Time is given t = 5 min

1 minute = 60 sec

So 5 minute = 5×60 = 300 sec

So current

Resistance is given R = 40 ohm

Sp from ohm's law potential difference across resistor v = iR = 2.1866×40 = 87.466 volt

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