JEE Exam  >  JEE Questions  >  Find the magnitude force on a point charge of... Start Learning for Free
Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners?
Most Upvoted Answer
Find the magnitude force on a point charge of 2 coulomb at the centre ...
Calculation of Force on Point Charge at the Centre of Square


  • Given: Point charge Q = 2C is placed at the centre of a square of side a. Three identical point charges q are located at the corners of the square.

  • Formula: The force between two point charges is given by Coulomb's law F = (kQq)/r^2, where k is the Coulomb's constant, Q and q are the magnitudes of the charges, and r is the distance between them.

  • Calculation:




  • Let's consider one of the corner charges and the charge at the centre of the square.

  • The distance between them is a/2, as it is the diagonal of the square of side a.

  • Substituting the values in Coulomb's law, the force between them is F = (kQq)/(a/2)^2 = 4kQq/a^2

  • As there are three corner charges, the total force on the charge at the centre is F(total) = 3F = 12kQq/a^2

  • Substituting the values of k (9 x 10^9 Nm^2/C^2), Q (2C), q (qC), and a (the length of the side of the square), we get:



F(total) = 3 x (9 x 10^9 Nm^2/C^2) x (2C) x (qC) / a^2

Explanation of the Solution


  • The force between two point charges is proportional to the product of their magnitudes and inversely proportional to the square of the distance between them.

  • As there are three identical corner charges, we need to consider the force between the charge at the centre and each corner charge.

  • Finally, we need to add up the forces to get the total force on the charge at the centre.

Explore Courses for JEE exam
Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners?
Question Description
Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners?.
Solutions for Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? defined & explained in the simplest way possible. Besides giving the explanation of Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners?, a detailed solution for Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? has been provided alongside types of Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? theory, EduRev gives you an ample number of questions to practice Find the magnitude force on a point charge of 2 coulomb at the centre of a square of side a if 3 identical point charges of qulum are located at the corners? tests, examples and also practice JEE tests.
Explore Courses for JEE exam

Top Courses for JEE

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev