well! i want a 5ohm-20watt power resisitor. First of all please tell me that whether this resistor is available , i mean that is this a standard resistor. And im having some problems finding this in the market. So please can anybody tell me some alternatives to this. I have heard from one of my friends that we can make a resistor according to our required resistance and wattage by using a coil wire by using the formula:
well! by this i can find a required resistance but how to find a coil of the required power. that is 20 watts.
i'd suggest 2 10watt 10 ohm resistors in parrallel( form a loop with 2 resistors then connect to circuit) Note: 2X 10 ohm in parrallel = 5 ohm in total. You can certainly get 10 watt here in britain try Maplin or Rapid - online, mail order electronics companies. don't know about across the pond, etc.