# How to calculate the lethal amount of current for given amount of output voltage?

I have some electrical parts that I was planning to reuse, things like laptop chargers and some parts from a printer. I searched google for what's the lethal amount of current and they mention 10ma is lethal. But they didn't mention for what voltage it is lethal. My phone charger outputs 2Amp at 5 volts and I know it's not harmful. So I have these parts that output 24V 0.6Amps and I wanna know if there's a way I can know this will be harmful or not?

In general is there a formula I can use to calculate a threshold amp value for given DC/AC voltage?

• Voltage on its own isn't lethal. There's a saying "volts jolt but mils kill". – Andy aka Jul 18 '20 at 8:04
• Does this answer your question? How much voltage/current is "dangerous"? – JRE Jul 18 '20 at 8:43
• @Rohit: There isn't a simple calculation you can do. The question I've linked to goes into some detail about why it isn't simple, and provides some guidelines. – JRE Jul 18 '20 at 8:45
• 36 VDC is deemed safe. People have died from making contact with a 36V helicopter battery. Rare. Not impossible. – Russell McMahon Jul 18 '20 at 11:43

$$I=\dfrac{V}{R}$$ or $$V=I\cdot R$$