2 ms·
> though only less than 1/r^2, not more! The electric field of a wire drops off like 1/r, which is larger than 1/r^2.
by jcranmer 4y ago
> though only less than 1/r^2, not more!
The electric field of a wire drops off like 1/r, which is larger than 1/r^2.
- dataflow 4y agoA wire doesn't look like a point source from far away, unlike a dipole. Cut off a segment of that wire (so it's not infinite-length) and it won't be 1/r at large distances.