What is the flux through a cube of side $a$ if a point charge of $q$ is at one of its comer?
What is the flux through a cube of side $a$ if a point charge of $q$ is at one of its comer?
- [AIPMT 2012]
- A
$\frac{Q}{{6{\varepsilon _0}}}$
- B
$\;\frac{Q}{{8{\varepsilon _0}}}$
- C
$\;\frac{Q}{{3{\varepsilon _0}}}$
- D
$\;\frac{Q}{{2{\varepsilon _0}}}$
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Using thomson's model of the atom, consider an atom consisting of two electrons, each of charge $-e$, embeded in a sphere of charge $+2e$ and radius $R$. In equilibrium each electron is at a distance $d$ from the centre of the atom. What is the equilibrium separation between electrons
Using thomson's model of the atom, consider an atom consisting of two electrons, each of charge $-e$, embeded in a sphere of charge $+2e$ and radius $R$. In equilibrium each electron is at a distance $d$ from the centre of the atom. What is the equilibrium separation between electrons
If atmospheric electric field is approximately $150 \,volt / m$ and radius of the earth is $6400 \,km$, then the total charge on the earth's surface is .......... coulomb
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An electric charge $q$ is placed at the centre of a cube of side $\alpha $. The electric flux on one of its faces will be
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- [AIIMS 2001]
How does the electric field lines depend on area ?
How does the electric field lines depend on area ?
The magnitude of the average electric field normally present in the atmosphere just above the surface of the Earth is about $150\, N/C$, directed inward towards the center of the Earth . This gives the total net surface charge carried by the Earth to be......$kC$ [Given ${\varepsilon _0} = 8.85 \times {10^{ - 12}}\,{C^2}/N - {m^2},{R_E} = 6.37 \times {10^6}\,m$]
The magnitude of the average electric field normally present in the atmosphere just above the surface of the Earth is about $150\, N/C$, directed inward towards the center of the Earth . This gives the total net surface charge carried by the Earth to be......$kC$ [Given ${\varepsilon _0} = 8.85 \times {10^{ - 12}}\,{C^2}/N - {m^2},{R_E} = 6.37 \times {10^6}\,m$]
- [JEE MAIN 2014]