3 ms·
The voltage is less important than the amperage with something like this, but that fact only further emphasizes your point, there's literally zero risk of the p
by jsjohnst 10y ago
The voltage is less important than the amperage with something like this, but that fact only further emphasizes your point, there's literally zero risk of the paper catching fire.
- eggy 10y ago1.73Vrms / 45 ohms of impedance of headphones = 0.038 mA (doesn't include minor impedance from output) Power (Watts) = V^2/R, or I^2*R, so a maximum of 0.067 Watts to start a fire. Not much at all.
- jsjohnst 10y agoYup, exactly. A static electricity spark is typically high voltage, but very low amperage, and even it would be highly unlikely to set paper ablaze. A headphone is both very low amperage and low voltage, so essentially impossible without an external catalyst.