Find the charge on the droplet

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Reference no: EM131382858

Millikan's experiment A microscopic spherical oil droplet, of density ρ and unknown radius, carries an unknown electric charge. The droplet is observed to have terminal speed v1 when falling vertically in air of viscosity µ.

When a uniform electric field E0 is applied in the vertically upwards direction, the same droplet was observed to move upwards with terminal speed v2. Find the charge on the droplet. [Use the low Reynolds number approximation for the drag.]

Reference no: EM131382858

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