Home
Class 12
PHYSICS
Calculate the amount of work done to di...

Calculate the amount of work done to dissociate a system of three charge `1muC,1muCand-4muC` placed on the vertices of an equilateral triangle of side 10 cm.

Text Solution

Verified by Experts

`q_(A)=1xx10^(-6)C=q_(B)`
`q_(C)=-4xx10^(-6)C`
`r=10cm=0.1m`

Work done
`=W_(AB)+W_(BC)+W_(AC)`
`=(1)/(4piepsilon_(0)r)[q_(A)q_(B)+q_(B)q_(C)+q_(C)q_(A)]`
`=9xx10^(9)xx(1)/(0.1)[1xx1-4xx1-4xx1]xx10^(-12)`
`=(-9xx10^(9)xx7xx10^(-12))/(0.1)`
`=-.63J`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES & FIELDS

    OSWAAL PUBLICATION|Exercise (TOPIC -2) Very Short Answer Type Questions|6 Videos

  • ELECTRIC CHARGES & FIELDS

    OSWAAL PUBLICATION|Exercise (TOPIC -2 )Short Answer Type Questions - I|7 Videos

  • ELECTRIC CHARGES & FIELDS

    OSWAAL PUBLICATION|Exercise (TOPIC -1)Long Answer Type Questions|2 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    OSWAAL PUBLICATION|Exercise TOPIC-2 DE-BROGLIE RELATION (NUMERICAL PROBLEMS)|7 Videos

  • ELECTROMAGNETIC INDUCTION

    OSWAAL PUBLICATION|Exercise TOPIC-2 (Eddy Current, Self & Mutual Inductance) (Numerical Problems)|3 Videos

Similar Questions

Explore conceptually related problems

Three point charges 3 nC , 6 nC and 9 nC are placed at the corners of an equilateral triangle of side 0.1 m . The potential energy of the system is

Verify that the points ( 0,7,10 ) , ( -1,6,6) and ( -4,9, 6) are the vertices of an isosceles triangle

Calculate the amount of work done by a uniform electric field of 200 Vm^(-1) on an electric dipole of length 0.05m and charge 40nC in order that the angle between the axis and the field is equal to 180^(@) , what is the amount of torque required to maintain that position?