# Charges/electric field

1. Jan 28, 2004

### pringless

Suppose that the strength of the electric field about an isolated point charge has a certain value at a distance of 1 m. How will the electric field strength compare at a distance of 2 m from the point charge?

i think the field strength will be 1/4 at twice the distance. am i correct?

2. Jan 28, 2004

### Staff: Mentor

Right. The field from a point charge follows an inverse square law: $E = \frac{kq}{r^2}$

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