The electric field strength in N C - 1 that is required to just prevent a water drop carrying a charge 16 × 10 - 19 C from falling under gravity is ( g = 9.8 m s - 2 , the mass of water drop = 0.0016

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The electric field strength in N C - 1 that is required to just prevent a water drop carrying a charge 16 × 10 - 19 C from falling under gravity is ( g = 9.8 m s - 2 , the mass of water drop = 0.0016 g )

TestHub · Accepted Answer

Charge on drop = 16 × 10 - 19 C Mass of the drop = 0.0016 g = 16 × 10 - 4 g = 16 × 10 - 7 kg g = 9.8 m s - 2 In balance position, m g = q E Where, E is electric field strength. E = m g q = 16 × 10 - 7 × 9.8 16 × 10 - 19 = 9 .8 × 10 13 N C - 1 .

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