How to load a battery / wall-wart for a voltage test?

Using Arduino General Electronics
3

250mA for AA/AAA seems about right

So if my arithmetic is correct I want a resistor of 1.5V / 0.25A = 6 ohms.

As for the wattage of that resistor well 1.5 x 0.25 = .375 so I want 1/2W ones I guess....