Question

# Number of electric lines of force emanating from 1C of positive charge in vacuum is :

A
8.85×1012
B
9×109
C
1/4π×9×109
D
1.13×1011
Solution
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#### ϕ from 1C of charge is =Qenclosedϵo=18.8501×10−12=1.129×1011

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