Re: conceptual puzzle, movng charge


The argument you cite (and the applet) actually demonstrate this at
work. In the applet, choose "user controlled" and start at a constant
velocity; then suddenly stop the charge (move the velocity down to
zero). You will see that at distant locations, the field will continue
to point to the "extrapolated" position -- its direction will continue
to change -- even after the charge has stopped.

Ah hah!! Thanks!

.

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