In air the value of the total electric flux emitted from unit positive charge is
- $\varepsilon_0$
- $(\varepsilon_0 ^{-1})$
- $(4 \pi \varepsilon_0)^{-1}$
- $4 \pi \varepsilon_0$
The Correct Option is B
Solution and Explanation
Top Questions on Electrostatic potential
- As shown in figure, a cuboid lies in a region with electric field \(E=2 x^2 \hat{i}-4 y \hat{j}+6 \hat{k} N / C\). The magnitude of charge within the cuboid is \(n \epsilon_0 C\). The value of \(n\) is _____. (if dimension of cuboid is \(1 \times 2 \times 3 m ^3\) )
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A point source of light is placed at the focus of a concave mirror. Consider only paraxial rays. The shapes of the wavefronts of incident and reflected lights respectively are:
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Reason (R) : Liberation of oxygen is due to photolysis of water.
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Reason (R) : Cro-Magnon man had slightly prognathous face.
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- Transcription
Concepts Used:
Electrostatic Potential
The electrostatic potential is also known as the electric field potential, electric potential, or potential drop is defined as “The amount of work that is done in order to move a unit charge from a reference point to a specific point inside the field without producing an acceleration.”
SI Unit of Electrostatic Potential:
SI unit of electrostatic potential - volt
Other units - statvolt
Symbol of electrostatic potential - V or φ
Dimensional formula - ML2T3I-1
Electric Potential Formula:
The electric potential energy of the system is given by the following formula:
U = 1/(4πεº) × [q1q2/d]
Where q1 and q2 are the two charges that are separated by the distance d.