SATHEE: Electrostatics Question 259

Electrostatics Question 259

Question: Two point charges $(+ Q)$ and $(- 2 Q)$ are fixed on the X-axis at positions $a$ and $2 a$ from origin respectively. At what positions on the axis, the resultant electric field is zero [MP PET 2001]

Options:

A) E at all points on the $Y -$ axis is along $\hat{i}$

B) The electric field $\vec{E}$ at all points on the $X -$ axis has the same direction

C) Dipole moment is $2 q d$ directed along $\hat{i}$

D) Work has to be done in bringing a test charge from infinity to the origin

Show Answer

Answer:

Correct Answer: A

Solution:

It is clear that $\vec{E}$ at all points on the y-axis is along $\hat{i}$ .

Here $\vec{E}$ of all points on x-axis cannot have the same direction.

Here electric potential at origin is zero so no work is done in bringing a test charge from infinity to origin. Here dipole moment is in ? x direction (-q to +q).

Hence only option (a) is correct.

Play Store

App Store

Ask SATHEE

Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this journey of growth together! 🌐📚🚀🎓

I'm relatively new and can sometimes make mistakes.
If you notice any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on "I understand".

Electrostatics Question 259

Question: Two point charges (+Q) and (−2Q) are fixed on the X-axis at positions a and 2a from origin respectively. At what positions on the axis, the resultant electric field is zero [MP PET 2001]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Menu

Question: Two point charges $(+ Q)$ and $(- 2 Q)$ are fixed on the X-axis at positions $a$ and $2 a$ from origin respectively. At what positions on the axis, the resultant electric field is zero [MP PET 2001]