Page 77 - The Basics IA by ETron Circuit Labs

If you use the formula for Power, Watts = Volts x Amps, you will see the different amounts of power dissipated by the resistors. These resistors are rated at 2 watt. If you exceed 2 watt of power to be dissipated by the resistor, the resistor will overheat and be destroyed. Be careful not to burn your finger on a hot resistor.Watts = Volts x Amps (W=VxA)With a 10 Ohm resistor: E = I x R (Ohm’s Law)9 = I x 10I = 0.9 AmpsW=VxA8.1 Watts = 9 Volts x 0.9 AmpsSince the resistors are rated at 2 Watt, this resistor will get too hot and destroy itself.With a 100 Ohm resistor: E=IxR9 = I x 100I = 0.09 AmpsW=VxA0.81 Watts = 9 x 0.09Still too much heat to be dissipated since the 100 Ohm resistor is only rated at 2 Watt.With a 1K Ohm resistor: E=IxR9 = I x 1000I = 0.009 AmpsW=VxA0.081 Watts = 9 x 0.009This is okay because 0.081 Watts is far less than 2 Watt and the resistor will not overheat.Here’s What You’ll Need...R1R1R1B1RESISTORhole 10ahole 23a10 Ohm ' (Brown, Black, Black, Gold) hole 10ahole 23a100 Ohm - (Brown, Black, Brown, Gold)hole 10ahole 23a1K $ (Brown, Black, Red, Gold) REDBLACKWIRESW1 = 10d & 20jred = hole 23e black = open0 MASCAN HERE TO SEE MORE ONLINE75Visit us online at www.ETronCircuit.com for more exciting projectsLAB 38Lab Observations