Two large circular discs separated by a distance of 0.01 m are connected to a battery via a swit....

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Two large circular discs separated by a distance of 0.01 m are connected to a battery via a switch as shown in the figure. Charged oil drops of density 900 kg m-3 are released through a tiny hole at the center of the top disc. Once some oil drops achieve terminal velocity, the switch is closed to apply a voltage of 200 V across the discs. As a result, an oil drop of radius 8×10-7 m stops moving vertically and floats between the discs. The number of electrons present in this oil drop is .......... (Neglect the buoyancy force, take acceleration due to gravity 10 ms-2 and charge on an electron (e)=1.6×10-19C\n 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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