3 ms·
1.73Vrms / 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 W
by eggy 10y ago
1.73Vrms / 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.