Two point charges + 8q and – q are located at x =

Question

Two point charges + 8q and – q are located at x = 0 and x = L respectively. The location of a point on the x axis at which the net electric field due to these two point chages is zero is (a) L/4(b) 2L(c) 4 L(d) 8 L

Navjyot Kalra · Accepted Answer

(b) –K2q/(x-L)2
+ K8q/x2 = 0 ? 1/ (x - L)2 = 4/ x2 or 1/x – L = 2/x
? x = 2 x – 2 L or x = 2 L Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:Table Normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri,sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;}

Electrostatics> Two point charges + 8q and – q are locate...

Two point charges + 8q and – q are located at x = 0 and x = L respectively. The location of a point on the x axis at which the net electric field due to these two point chages is zero is

(a) L/4
(b) 2L
(c) 4 L
(d) 8 L

lokesh , 11 Years ago

Navjyot Kalra

LIVE ONLINE CLASSES

Electrostatics question based on earthing of spherical shell

electrostatics

an object has a charge of 2c and gains 10^19 electrons. the net chaarge on the object becomes??

electrostatics

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

Find the value of q so that system remains in equilibrium.. figure attached below

electrostatics

Need to find the time taken for the dipole to come back to eqm

electrostatics

Electrostatics> Two point charges + 8q and – q are locate...

Two point charges + 8q and – q are located at x = 0 and x = L respectively. The location of a point on the x axis at which the net electric field due to these two point chages is zero is (a) L/4(b) 2L(c) 4 L(d) 8 L

lokesh , 11 Years ago

Navjyot Kalra

LIVE ONLINE CLASSES

Other Related Questions on electrostatics

Electrostatics question based on earthing of spherical shell

electrostatics

an object has a charge of 2c and gains 10^19 electrons. the net chaarge on the object becomes??

electrostatics

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

Find the value of q so that system remains in equilibrium.. figure attached below

electrostatics

Need to find the time taken for the dipole to come back to eqm

electrostatics

Two point charges + 8q and – q are located at x = 0 and x = L respectively. The location of a point on the x axis at which the net electric field due to these two point chages is zero is

(a) L/4
(b) 2L
(c) 4 L
(d) 8 L