How do you find amperes when given volts and watts?

Answer 1

I would assume you are speaking of AC circuits, and do not wish a long winded engineering primer.

The basic formulas to calculate all:

A=Amperes

V=Volts

W=Watts

AxV=W , W/V=A, W/A=V

So, to find Amps, divide voltage into the wattage A = W/V

Answer 2

Use the formula: power = current x voltage. In SI units: watts = amperes x volts.