Recent content by Sullitp

Ive got lost again - But hey I got a new resistance this time - The "Hot temperature resistance" maybe? I used the R1= 68(1+0.005x20) = 74.8 But I still can't figure out how to find the operating temperature with that last part solved. A formula for this would help LOTS! ...Hints are...

Hey so I am stuck on a 2part question, it goes as follows: A tungstan filament in a light bulb is rated 75w for a 230v supply. The resistance of the filament at 20*C (*C means degrees celsius) is 68 ohm. Assume a constant temperature coefficient of 0.005. Calculate: A) The hot resistance...