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Question

# Number of electric lines of force emanating from 1C of positive charge in vacuum is :8.85×10−129×1091/4π×9×1091.13×1011

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

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