Question:
The inward and outward electric flux from a closed surface are respectively $8\times 10^3$ and $4\times 10^3$ unit. Then the net charge inside the closed surface is
The inward and outward electric flux from a closed surface are respectively $8\times 10^3$ and $4\times 10^3$ unit. Then the net charge inside the closed surface is
Updated On: Feb 23, 2024
- $\frac{-4\times 10^3}{\varepsilon_0}$ coulomb
- $-4\times10^3\,\varepsilon_0$ coulomb
- $-4\times10^3$ coulomb
- $4\times10^3$ coulomb
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Flux = $\frac{q}{\varepsilon_0} \, i.e.\, q = \varepsilon_0 \times $ flux = $\varepsilon_0 $ (8 - 4) 10$^3$ = 4 $\times 10^3 \, \varepsilon_0$
Net charge inside the surface = - 4 $\times 10^3 \, \varepsilon_0$
Net charge inside the surface = - 4 $\times 10^3 \, \varepsilon_0$
Was this answer helpful?
0
0
Top Questions on Electric Field
- An electron of mass \( m \) with an initial velocity \( \vec{v} = v_0 \hat{i} (v_0>0) \) enters an electric field \( \vec{E} = -E_0 \hat{k} \). If the initial de Broglie wavelength is \( \lambda_0 \), the value after time \( t \) would be:
- JEE Main - 2025
- Physics
- Electric Field
- 1 tesla =
- AP POLYCET - 2024
- Physics
- Electric Field
- \( \sigma \) is the uniform surface charge density of a thin spherical shell of radius \( R \). The electric field at any point on the surface of the spherical shell is:
- MHT CET - 2024
- Physics
- Electric Field
- \(\sigma\) is the uniform surface charge density of a thin spherical shell of radius \(R\). The electric field at any point on the surface of the spherical shell is:
- JEE Main - 2024
- Physics
- Electric Field
- A long solenoid of length \(75\) cm carries a current of \(3.5\) A. If the number of turns of the solenoid is \(600\), the magnitude of the magnetic field inside the solenoid is
- TS EAMCET - 2024
- Physics
- Electric Field
View More Questions
Questions Asked in KCET exam
- The electric current flowing through a given conductor varies with time as shown in the graph below. The number of free electrons which flow through a given cross-section of the conductor in the time interval \( 0 \leq t \leq 20 \, \text{s} \) is
- KCET - 2024
- Current electricity
- Auxins : Apical dominance : : Gibberellins : .............
- KCET - 2024
- Plant Physiology
- A die is thrown 10 times. The probability that an odd number will come up at least once is:
- KCET - 2024
- Probability
- The incorrect statement about the Hall-Heroult process is:
- KCET - 2024
- General Principles and Processes of Isolation of Elements
- Corner points of the feasible region for an LPP are $(0, 2), (3, 0), (6, 0), (6, 8)$ and $(0, 5)$. Let $z = 4x + 6y$ be the objective function. The minimum value of $z$ occurs at:
- KCET - 2024
- Linear Programming Problem
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).