How many ohms are the chip resistors 102, 12 and 5R1 The resistance is burnt. I want to change it,

How many ohms are the chip resistors 102, 12 and 5R1 The resistance is burnt. I want to change it,


102=1000=1K 12=12 5R1=5.1



How many ohms is the 304 chip resistance


304 chip resistance calculation: the first two digits are the cardinal number, and the last one is the factorial algorithm: 30x10 ^ 4
For example, for a resistance lower than 1K Ω, if the symbol on the 75 Ω patch is 750, zero ohm is 000
Meal Circuit formula manual



The rated voltage of a small bulb is 3V and the rated power is 1.5W
Now connect it to the circuit with the power supply voltage of 2V. If the current indication is 0.25A, what is the actual power?


We need to consider two cases when we calculate this kind of problem. One is to examine the flexible application of the combination of the formula of electric power and Ohm's law. The other is to examine the actual processing ability of circuit problems. For this problem, given the actual voltage and actual current, then the actual power is obviously P = UI = 2 * 0.25 = 0