Two charges `+5mu C` and `+10 mu C` are placed `20 cm` apart. The net electric field at the mid-point between the two charges is

Options

A. `4.5 xx10^(6)` N/C directed towards `+5muC`
B. `4.5 xx10^(6)` N/C directed towards `+10muC`
C. `13.5 xx10^(6)` N/C directed towards `+5muC`
D. `13.5 xx10^(6)` N/C directed towards `+10muC`

Answer

A

Explanation

`E_("net") = (9xx10^9 [10-5]xx10^(-6))/((0.1)^2)`
`=4.5 xx10^6 N//C`
Towards `+5muC` charge.