Question 440: Electrostatics & Capacitance

Question

Three charged particle A, B and C with charges
–4q, 2q and –2q are present on the
circumference of a circle of radius d. the charged
particles A, C and centre O of the circle formed
an equilateral triangle as shown in figure. Electric
field at O along x-direction is :

Accepted Answer

Resultant electric field
E
net
= 2 $$ 	imes $$ 2Ecos 30
o
= $$4 	imes {{\sqrt 3 } \over 2}{{K\left( {2q} ight)} \over {{R^2}}}$$
= $${{4\sqrt 3 \left( {2q} ight)} \over {2{R^2} 	imes 4\pi {\varepsilon _0}}}$$
= $${{\sqrt 3 q} \over {\pi {\varepsilon _0}{d^2}}}$$

Answer

$${3{\sqrt 3 q} \over 4{\pi {\varepsilon _0}{d^2}}}$$

Answer

$${{\sqrt 3 q} \over 4{\pi {\varepsilon _0}{d^2}}}$$

Answer

$${{\sqrt 3 q} \over {\pi {\varepsilon _0}{d^2}}}$$

Answer

$${{2\sqrt 3 q} \over {\pi {\varepsilon _0}{d^2}}}$$

Electrostatics & Capacitance

Three charged particle A, B and C with charges –4q, 2q and –2q are present on the circumference of a circle of radius d. the charged particles A, C and centre O of the circle formed an equilateral triangle as shown in figure. Electric field at O along x-direction is :

Choose the correct answer: