Question:
Two point charges of $1 \,\mu C$ and $-1\, \mu C$ are separated by a distance of $100\, ?$. A point $P$ is at a distance of $10 \,cm$ from the midpoint and on the perpendicular bisector of the line joining the two charges. The electric field at $P$ will be
Two point charges of $1 \,\mu C$ and $-1\, \mu C$ are separated by a distance of $100\, ?$. A point $P$ is at a distance of $10 \,cm$ from the midpoint and on the perpendicular bisector of the line joining the two charges. The electric field at $P$ will be
Updated On: Jul 7, 2022
- $9 \,N \,C^{-1}$
- $0.9 \,N \,C^{-1}$
- $90 \,N \,C^{-1}$
- $0.09 \,N \,C^{-1}$
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The point lies on equatorial line of a short dipole.
$\therefore E=\frac{2ql}{4\pi\varepsilon_{0}r^{3}}$
$=\frac{9\times10^{9}\times10^{-6}\times10^{-8}}{\left(10^{-1}\right)^{3}}$
$=0.09\,N\,C^{-1}$
Was this answer helpful?
0
0
Top Questions on Electric Field
- The electric field (\( \vec{E} \)) and electric potential (\( V \)) at a point inside a charged hollow metallic sphere are respectively:
- CBSE CLASS XII - 2025
- Physics
- Electric Field
- A point charge of $ +2 \, \mu\text{C} $ is placed at the origin. What is the magnitude of the electric field at a point 3 m away along the x-axis? (Use $ k = 9 \times 10^9 \, \text{Nm}^2/\text{C}^2 $)
- AP EAPCET - 2025
- Physics
- Electric Field
- Two point charges +3µC and -2µC are placed 5 cm apart in vacuum. Find the point on the line joining the charges where the electric field is zero.
- AP EAPCET - 2025
- Physics
- Electric Field
- An electron (mass \(9 \times 10^{-31}\) kg and charge \(1.6 \times 10^{-19}\) C) moving with speed \(c/100\) (\(c\) = speed of light) is injected into a magnetic field of magnitude \(9 \times 10^{-4}\) T perpendicular to its direction of motion. We wish to apply a uniform electric field \( \vec{E} \) together with the magnetic field so that the electron does not deflect from its path. (speed of light \(c = 3 \times 10^8\) m/s):
- NEET (UG) - 2025
- Physics
- Electric Field
- Work done to move a unit charge from one point to the other in an electric circuit is called
- AP POLYCET - 2025
- Physics
- Electric Field
View More Questions
Concepts Used:
Electric Field
Electric Field is the electric force experienced by a unit charge.
The electric force is calculated using the coulomb's law, whose formula is:
\(F=k\dfrac{|q_{1}q_{2}|}{r^{2}}\)
While substituting q2 as 1, electric field becomes:
\(E=k\dfrac{|q_{1}|}{r^{2}}\)
SI unit of Electric Field is V/m (Volt per meter).