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ShoesButtBack

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I am trying to calculate the magnetic field at a distance r from a wire carrying a 495Hz signal at 8Vpp and current 0.8mA. Initially I tried ampere's law, but fell into the trap of using the un-modified form (without maxwell's correction). I know that the field changes with the frequency, but I am unsure of exactly how they tie together, and I can't seem to find the relationship between dE/dt and frequency.

Any ideas?