Question

If anyone knows how to do these, please help. I only need one answer from each of the two problems.

Answer 1

Answer:

Step-by-step explanation:

95) We know, thanks to Ohm's law that:

$V = I . R$

Where:

V= voltage

I = electric current

R = resistance or impedance.

We also know that there are two types of electric circuits: the resistances can be connected parallel to each other, or a series circuit, where the electricity has only one path to flow. In this case, the total resistence or impedance can be calculated adding each impedance.

a) R= R1 + R2 + R3 = 2 Ω + 5 Ω + 7 Ω = 14 Ω

b) R = 12 Ω+ 8 Ω +15 Ω = 35 Ω

c) R = 2 Ω +8 Ω +6 Ω +4 Ω= 20 Ω

96)

a)

$Z1= 3 + 4 = 7\\Z2=6+2= 8\\R = \frac{7.8}{7+8} = \frac{56}{15 }$Ω

b)

$Z1=5+3=8\\Z2=8+9=17\\R=\frac{17.8}{17+8} =\frac{136}{25}$Ω

c)

$Z1=4+2=6\\Z2=5+7=12\\R= \frac{6.12}{6+12} = 4$Ω