That depends on your router.
The current draw of a router (or any other electrical device) can be calculated by:
Amps * Volts = Watts
If you know any two, you can calculate the third.
If (for example) the router draws 750 Watts, and you know that it plugs into 120 Volts, then you can plug into the formula
Amps *120 Volts = 750 Wats
OR
Amps = 750 Watts/120 Volts
OR
Amps = 6.25
If you would like the answer in volts it would then be about:
120
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Yes, you can use a 2.0 amps power supply for a 1.0 amps router. The higher amp rating means the power supply can provide more current than the router needs, which is fine. Just ensure the voltage output of the power supply matches the router's requirements to prevent damage.
To find the amperage, you can use the formula: Amps = Watts/Volts. Plugging in the values, you get Amps = 1800 Watts / 110 Volts ≈ 16.36 Amps.
To calculate the output amps of a 600kVA generator at 240V, you would use the formula Amps = kVA / Volts. In this case, it would be 600kVA / 240V = 2500 amps.
To find the amperage, you can use the formula: Watts = Volts x Amps. Rearranging it, we get Amps = Watts / Volts. Plugging in the values for 3000 Watts and 460 Volts, we get: Amps = 3000 / 460 = 6.52 amps.
To find the amperage, you can use the formula: Amps = Watts / Volts. In this case, with 72 Watts and 12 Volts, you would have 6 amps of current.