Question

There is a charge that is 1uC and another charge that is 2 uC. They are 10 cm apart. I need to find a point where the electric field is zero.

All I have is this kq1\a=kq2\(10-a)^2

where q1=1
where q2=2
where k=9*10^9

I am lost after this I know I use regular algebra but i don't get the right answer. Please help

Answer 1

The location where the field is zero is on a line between the two points where q1/d1^2 equals q2/d2^2

d1 + d2 = 10

Solve 1/d1^2 = 2/(10 - d1)^2)

d1 is the distance from charge 1 (1 uC)

Answer 2

So are you saying that for d1 I just put 10 or is that a variable

Answer 3

d1 is a variable.
Solve the last equation I wrote to determine its value.

I did not say that d1 = 10

Answer 4

Alguém traduza isso,por favor ... =)

Answer 5

Duas cargas fixas de 1 e -3 (µC) estão separadas por uma distância de 10 cm?
Onde você deverá colocar uma terceira carga, para que nenhuma força atue sobre ela? Importa qual o sinal dessa carga?