I am measuring the current going to a motor using current sense resistors; however, in order to get a resistor that can handle the proper power, the price goes up way too much. My question is, can I use multiple lower power rated resistors in parallel to measure the same current value? In other words if I need 10W single resistor, I would break that up into five 2W resistors in parallel with the same value.
They would all have to be the same resistance value/tolerance and the power margin would need to overcome the tolerance of the resistance. Seems mathematically fine, but wanted to see if there are any gotchas here?