1800-150-456-789
FlagBACK
Flag Electrostatics> Velocity of electron...
question mark

An electron is revolving around a line charge having linear density of charge 1 micro coulomb. If the radius of the path is 1 cm, then what ll b the velocity of the elctron????

Princess Cutie , 12 Years ago
Grade
anser 2 Answers
Ashish Gupta

Last Activity: 10 Years ago

\text{ Force = 2\lambda Ke/r = mv^{2}/r => v = root [2 X 10^{-6} X 9 X 10^{9} X 1.6 X 10^{-19}]/[9.1 X 10^{-31}] = 10^{8} m/s }

Atal Tiwari

Last Activity: 10 Years ago

Since, the charge density of line is 1micro coulomb,
i.e. it can be written as 10-6 C.
and radius=1cm
               =0.01m
Now, Electric Field E= ∂/2-pi-epsilon naught-r
where, ∂ is linear charge density and r is the radius.
then by,
Er= ∂/2-pi-epsilon naught                               
V= ∂/2-pi-epsilon naught
V= 4.5 x 109 x 10-6
    = 4.5 X 103 J/C
As we know k=qV
1/2 mv2= 1.6 x 10-19 x 4.5 x 103 
v=4x107 m/s
 

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Other Related Questions on electrostatics

question mark
Electrostatics question based on earthing of spherical shell
electrostatics
0 Answer Available

Last Activity: 2 Years ago

question mark
an object has a charge of 2c and gains 10^19 electrons. the net chaarge on the object becomes??
electrostatics
1 Answer Available

Last Activity: 3 Years ago

question mark
A wire with a linear charge density lambda forms a quarter of a cjrclenof radius R and is placed asa shown in thefigure with its centre of curvature at the origin O the electric field at O will be
electrostatics
0 Answer Available

Last Activity: 3 Years ago

question mark
Find the value of q so that system remains in equilibrium.. figure attached below
electrostatics
0 Answer Available

Last Activity: 3 Years ago

question mark
Find the value of q so that system remains in equilibrium
electrostatics
0 Answer Available

Last Activity: 3 Years ago