Calculate the voltage needed to balance an oil drop carrying 10 electrons between the plates of capacitor 5mm apart.The mass of the drop is 3x10 -16 kg and g=10ms -2 .

Question

Mallikarjun Maram · Answer

The gravitational force on the oil drop = mg = 3 x 10 -16 x 10 = 3 x 10 -15 N. Magnitude of the electrostatic force needed balance this force is given by E = mg/10e = (3 x 10 -15 ) / (10 x 1.6 x 10 -19 ) = 0.1875 x 10 4 V/m. Voltage across the places of the capacitor is then given by V = Ed = 0.1875 x 10 4 x 5 x 10 -3 = 9.375 Volts.

Krish Gupta · Answer

The gravitational force on the oil drop = mg = 3 x 10 -16 x 10 = 3 x 10 -15 N. Magnitude of the electrostatic force needed balance this force is given by E = mg/10e = (3 x 10 -15 ) / (10 x 1.6 x 10 -19 ) = 0.1875 x 10 4 V/m. Voltage across the places of the capacitor is then given by V = Ed = 0.1875 x 10 4 x 5 x 10 -3 = 9.375 Volts. Thanks , hope it helps.

Kushagra Madhukar · Answer

Dear student, Please find the solution to your problem. For the oil drop to be in balance, the electrostatic force and the gravitational force need to be equal. Hence, qE = mg or, q x V/d = mg or, V = mgd/q = mgd/10e or, V = (3 x 10 -16 x 10 x 5 x 10 -3 )/ (10 x 1.6 x 10 -19 ) = 9.375 Volts Hope it helps. Thanks and regards, Kushagra

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Calculate the voltage needed to balance an oil drop carrying 10 electrons between the plates of capacitor 5mm apart.The mass of the drop is 3x10 -16 kg and g=10ms -2 .

Calculate the voltage needed to balance an oil drop carrying 10 electrons between the plates of capacitor 5mm apart.The mass of the drop is 3x10^-16kg and g=10ms^-2.

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Calculate the voltage needed to balance an oil drop carrying 10 electrons between the plates of capacitor 5mm apart.The mass of the drop is 3x10 -16 kg and g=10ms -2 .

Calculate the voltage needed to balance an oil drop carrying 10 electrons between the plates of capacitor 5mm apart.The mass of the drop is 3x10-16kg and g=10ms-2.

3 Answers

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Calculate the voltage needed to balance an oil drop carrying 10 electrons between the plates of capacitor 5mm apart.The mass of the drop is 3x10^-16kg and g=10ms^-2.