Why does OHMs law not work on AC circuits?

[qlc]

can someone please explain to me physically how is it that
when i have an AC source and i measure Voltage on a resistor its the same with and without the resistor
and when i have a DC source and i measure Voltage again on the resistor and now there's a different reading

its like ohm law doesn't support AC circuits but why ?

 

[Fightfish]

Did you use the peak value or the r.m.s. value of the AC source for your computation?

 

[Dale]

Ohm's law works fine for AC circuits. It sounds like your AC source is closer to ideal.