|
|
|
If a ham radio tuner circuit has 5 resistors in parallel with the following values in ohms
4.2, 6.73, 15.2, 32, 66
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/4.2 + 1/6.73 + 1/15.2 + 1/32 + 1/66)
R = 1/(.2381 + .148588 + .065789 + .03125 + .015151)
R = 1/(.498878)
R = 2.0045 ohms
If a wireless internet circuit has 5 resistors in parallel with the following values in ohms
3.22, 4.65, 9.43, 54, 128
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/3.22 + 1/4.65 + 1/9.43 + 1/54 + 1/128)
R = 1/(.310559 + .215054 + .106045 + .018519 + .007813)
R = 1/(.65799)
R = 1.51978 ohms
If an lcd hdtv circuit has 5 resistors in parallel with the following values in ohms
2.1, 3.7, 12.7, 34, 71
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/2.1 + 1/3.7 + 1/12.7 + 1/34 + 1/71)
R = 1/(.47619 + .27027 + .07874 + .029412 + .014085)
R = 1/(.868697)
R = 1.15115 ohms
If a television audio circuit has 5 resistors in parallel with the following values in ohms
1.8, 5.2, 16.4, 42, 67
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/1.8 + 1/5.2 + 1/16.4 + 1/42 + 1/67)
R = 1/(.555556 + .192308 + .060976 + .02381 + .014925)
R = 1/(.847575)
R = 1.17984 ohms
If a laptop computer modem circuit has 5 resistors in parallel with the following values in ohms
1.2, 4.7, 33, 84, 120
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/1.2 + 1/4.7 + 1/33 + 1/84 + 1/120)
R = 1/(.833333 + .212766 + .030303 + .011905 + .008333)
R = 1/(1.09664)
R = .91188 ohms
If a computer sound card circuit has 5 resistors in parallel with the following values in ohms
2, 7, 23, 47, 100
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/2 + 1/7 + 1/23 + 1/47 + 1/100)
R = 1/(.5 + .142857 + .043478 + .021276 + .01)
R = 1/(.717611)
R = 1.3935 ohms
If a metal detector circuit has 5 resistors in parallel with the following values in ohms
11, 26, 72, 76, 324
then what is the total (R) resistance?
Solution
R = 1/(1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5)
Answer
R = 1/(1/11 + 1/26 + 1/72 + 1/76 + 1/324)
R = 1/(.090909 + .038462 + .013888 + .013158 + .003086)
R = 1/(.159503)
R = 6.269 ohms
If a digital camera circuit has (E) 6 volts and (I) 3 amps
then what is the (R) resistance?
Solution
E / I = R
Answer
6 / 3 = 2 ohms
What is the power (P) in watts?
Solution
E * I = P
Answer
6 * 3 = 18 watts
If a gps circuit has a total resistance of (R) 3 ohms and (I) 2 amps
then what is the (E) volts?
Solution
I * R = E
Answer
2 * 3 = 6 volts
What is the power (P) in watts?
Solution
E * I = P
Answer
6 * 2 = 12 watts
If an mp3 player circuit has a total resistance of (R) 48 ohms and (E) 5 volts
then what is the (I) current?
Solution
E / R = I
Answer
5 / 48 = .104 Amps
What is the power (P) in watts?
Solution
E * I = P
Answer
5 * .104 = .52 Watts
