Home
Class 12
PHYSICS
A polythene piece rubbed with wool i...

A polythene piece rubbed with wool is found to have a negative charge of `3xx10^(-7)` c
(a) estimate the number of electrons transferred (from which to which )
(b) is there a transfer of mass from woool to polythene

Text Solution

Verified by Experts

(a) `2xx10^(12)` form wool to polythene
(b) yes but of a negligible amount (`=2xx10^(-18)` kg in the example )
Promotional Banner

Similar Questions

Explore conceptually related problems

Calculate the number of electrons to be transferred from a material body in order to charge it to +5.5 nC.

A charged oildrop is at rest in an electric field 500 V//m . If the mass of the drop be 0.8 xx 10^-12 g , then the number of electrons removed from the drop is

What is the force between two small charged speres having charges of 2xx10^(-7) c and 3xx10^(-7) c placed 30 cm apart in air

Find the number of different selections of 5 letters, which can be made from 5A's,4B's,3C's,2D's and 1E

What is the probability of getting a white marble from a jar which has 3 red, 7 green, and 10 white marbles ?

A spherical conductor of radius 0.12 m has a charge of 1.6xx10^(-7) C distributed uniformly on its surface, what is the electric potential? (a) inside the sphere? (b) Just outisde the sphere? (c) At a point 0.18 m from the centre of the sphere?

(a) Calculate the potential at a point P due to a charge of 4 xx 10^(-7) C located 9 cm away. (b) Hence obtain the work done in bringing a charge of 2 xx 10^(-9) C from infinity to the point P. Does the answer depend on the path along which the charge is brought ?

(a) Calcualte the potential at a point P due to a charge of 4 xx 10^(-7) C located 9 cm away. (b) Hence obtain the work done in bringing a charge of 2 xx 10^(-9) C from infinity to the point P. Does the answer depend on the path along which the charge is brought?

Calculate mass of 3.011 xx 10^(23) number of N_(2) molecules (mass from number) .