Question
Physics Question on Electric Field
An infinite long wire is stretched horizontally 4 m above the surface of the earth. It has a charge of 1.0 micro-coulomb (µC) per cm of its length. The value of electric field at a point on earth vertically below the wire is
A
4.5 N/C
B
45.0 N/C
C
4.5×105 N/C
D
2.5×103 N/C
Answer
4.5×105 N/C
Explanation
Solution
The correct option is (C)