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Charging by Friction

In Millikan‘s...

Question

In Millikan‘s experiment, the oil drops acquire charge by

A

Induction

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B

Friction

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C

Electric field

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D

Magnetic field

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Solution

The correct option is A Friction
It acquires charge by friction between the layers of liquid.

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Similar questions

Q. A charged drop of radius

1.92 m m

is kept stationary by the application of an electric field of

1.65 \times 10^{6}

N/C in Millikans oil drop experiment. The charge, if the density of oil is

920

K g / m^{3}

Q. Explain Millikan oil drop experiment in simple ways?

Q. Why are electrons attached to the oil drops in Millikan experiment?

Q. In 1909, Robert Millikan was the first to find the charge of an electron in his now-famous oil-drop experiment. In that experiment, tiny oil drops were sprayed into a uniform electric field between a horizontal pair of oppositely charged plates.The drops were observed with a magnifying eyepiece, and the electric field was adjusted so that the upward force on some negatively charged oil drops was just sufficient to balance the downward force of gravity. That is, when suspended, upward force qE just equaled mg. Millikan accurately measured the charges on many oil drops and found the values to be whole number multiples of

1.6 \times 10^{- 19} C

the charge of the electron. For this, he won the Nobel prize. Extra electrons on this particular oil drop (given the presently known charge of the electron) are :

Q. The oil drop experiment by R.A. Millikan was performed to find________.

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