That discussion is complicated
reference:
Effects of AC and DC Current on Human Body
The three basic factors that ascertain the kind of shock are the amplitude of the current, the duration of the current passing through the body, and the frequency. In direct current the frequency is not there. However the passing of direct current is the flow of electric energy through the body, and it would have its physiological effects during electrocution no matter what type of current is there.
The factor deciding the effects of the AC and DC current is the path the current takes through the body. If it is from the hand to the foot, it does not pass through the heart, and then the effects are not so lethal. However DC current will make a single continuous contraction of the muscles compared to AC current, which will make a series of contractions depending on the frequency it is supplied at. In terms of fatalities, both kill but more milliamps are required of DC current than AC current at the same voltage.
If the current takes the path from hand to hand thus passing through the heart it can result in fibrillation of the heart. Fibrillation is a condition when all the heart muscles start moving independently in a disorganized manner rather than in a state of coordination. It affects the ability of the heart to pump blood, resulting in brain damage and eventual cardiac arrest. If AC current is passed through the heart it induces fibrillation, whereas DC current just freezes the heart and makes it stand still. In terms of recovery once the offending current is removed a frozen heart has greater chances of recovery over a fibrillating heart. A fibrillating heart would require one or more shocks from a defibrillating machine to reestablish a rhythm.
Though both AC and DC currents and shock are lethal, more DC current is required to have the same effect as AC current. For example, if you are being electrocuted or shocked 0.5 to 1.5 milliamps of AC 60 Hz current is required and up to 4 mA of DC current is required. For the let-go threshold in AC a current of 3 to 22 mA is required against 15 to 88 of DC current.
However deep tissue burns are more common in DC currents as it causes a continuous muscle contraction that does not allow one to let go. In AC currents, fibrillation of the heart followed by cardiac arrest is more likely.
AC current is more dangerous to the heart than DC current. The incidence of ventricular fibrillation is ten times more frequent after AC than DC shock.
DC will kill you faster than AC
It depends if the weather is nice!
