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Question: Total electric flux coming out of a unit positive charge put in air is...

Total electric flux coming out of a unit positive charge put in air is

A

ε0\varepsilon_{0}

B

ε0−1\varepsilon_{0}^{- 1}

C

(4pε0)−1(4p\varepsilon_{0})^{- 1}

D

4πε04\pi\varepsilon_{0}

Answer

ε0−1\varepsilon_{0}^{- 1}

Explanation

Solution

Total flux coming out from unit charge

=E→.ds→=1ε0×1=ε0−1= \overrightarrow{E}.d\overrightarrow{s} = \frac{1}{\varepsilon_{0}} \times 1 = \varepsilon_{0}^{- 1}