Home
Class 12
PHYSICS
How much work has to be done in assembli...

How much work has to be done in assembling three charged particles at the vertices of an equilateral triangle as shown in figure

Text Solution

Verified by Experts

Amount of workdone in assembling the charges is equal to the net potential energy
` So, P.E.=V_(12)+V_(13)+V_(23) `
` =(9xx10^3)/10^-1xx10^-10 `
` [4xx2+4xx3+3xx2] `
` 9xx(8+12+6) `
` 9xx26=234J `
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRIC FIELD AND POTENTIAL

    HC VERMA|Exercise Objective 2|8 Videos

  • ELECTRIC CURRENT THROUGH GASES

    HC VERMA|Exercise Exercises|23 Videos

  • ELECTROMAGNETIC INDUCTION

    HC VERMA|Exercise EXERCISE|9 Videos

Similar Questions

Explore conceptually related problems

Find the coordinates of the vertices of an equilateral triangle of side 2 a as shown in Figure.

Three points charges are placed at the corners of an equilateral triangle of side L as shown in the figure:

Knowledge Check

  • Three identical point charges, q, are placed at the vertices of an equilateral triangle as shown in the figure. The length of each side of the triangle is d. Determine the magnitude and direction of the total electrostatic force on the charge at the top of the triangle.

    A
    `(Q^(2)sqrt(3))/(4pi epsilon_(0) d^(2))`, directed upward
    B
    `(Q^(2)sqrt(3))/(4pi epsilon_(0) d^(2))`, directed downward
    C
    `(Q^(2)sqrt(3))/(2pi epsilon_(0) d^(2))`, directed upward
    D
    `(Q^(2)sqrt(3))/(2pi epsilon_(0) d^(2))`, directed downward

  • Three particles of massses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangle of side 1m ( as shown in the figure ) . The ( x, y) coordinates of the centre of mass will be :

    A
    `(7/12m,sqrt3/4m)`
    B
    `(7/12m,sqrt3/8m)`
    C
    `(sqrt3/4m,5/12m)`
    D
    `(sqrt3/8m,7/12m)`

  • Three masses each of mass m are palced at the vertices of an equilateral triangles ABC of side l as shown in figure. The force acting on a mass 2m placed at the centroid O of the triangle is

    A
    zero
    B
    `(3Gm^(2))/(l^(2))`
    C
    `(5Gm^(2))/(l^(2))`
    D
    `(7Gm^(2))/(l^(2))`

    • Similar Questions

    Explore conceptually related problems

    Find centre of mass of a system of three particle kept at the corner equilateral triangle as shown in figure

    Find the expression for the potential energy of a system of two point charges q_(1), and q_(2) glocated at vecr_(1) and vecr_(2) respectively in an external electric field vecE. (b) Draw equipotential surfaces due to an isolated point charge (-q) and depict the electric field lines. (c) Three point charges +1muC,-1 muC and +2muC are initially infinite distance apart. Calculate the work done in assembling these charges at the vertices of an equilateral triangle of side 10 cm.

    Determine the electric dipole moment of the syatem of three charges , placed on the verices of an equilateral triangle , as shown in the fogure :

    Work done by an external agent in bringing three particles each of mass m at the vertices of an equilateral triangle of length l is

    Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to

    Home
    Profile