1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brut [27]
3 years ago
15

In a circuit, two resistors of 100 Ω and 80 Ω are connected in parallel. The parallel group is then connected in series with a 1

00 Ω resistor. What's the total resistance of the circuit?
Mathematics
1 answer:
nordsb [41]3 years ago
4 0

Answer:

Total Resistance = \frac{1300}{9} Ω  (or 144.44 Ω)

Step-by-step explanation:

If two resistors, with resistance x and y, are connected in parallel, their total resistance is given by the formula:

\frac{1}{Total}=\frac{1}{x}+\frac{1}{y}

If 2 resistors with resistance x and y and connected in series, their total resistance would be:

Total = x + y

<em>Now, the first part, 100 and 80 are in parallel, so according to formula it would be:</em>

<em>\frac{1}{Total}=\frac{1}{x}+\frac{1}{y}\\\frac{1}{Total}=\frac{1}{100}+\frac{1}{80}\\\frac{1}{Total}=\frac{9}{400}\\Total = \frac{400}{9}</em>

<em />

<em>Now, this is connected in series with 100, so the grand total would be:</em>

<em>Total Resistance of Circuit = \frac{400}{9}+100=\frac{1300}{9}</em>

<em />

This is the total resistance of the circuit.

You might be interested in
Erik drives 19.2 miles in 16 minutes.
Katen [24]

Answer:

Erik's average speed exceeds the speed limit by 6.91 miles per hour.

Step-by-step explanation:

Let suppose that Erik travels at constant speed. Hence, the speed (v), measured in miles per hour, is determined by following equation of motion:

v = \frac{s}{t} (1)

Where:

s - Distance, measured in miles.

t - Time, measured in hours.

Please notice that a hour equals 60 minutes. If we know that s = 19.2\,mi and t = 0.267\,h, then the speed of Erik is:

v = \frac{19.2\,mi}{0.267\,h}

v = 71.910\,\frac{mi}{h}

Which is 6.91 miles per hour above the speed limit.

6 0
3 years ago
Question 24 of 25 Use the quadratic formula to find the solutions to the equation. x² – 3x+1=0
user100 [1]
I think the answer is B! Hope this helps!
3 0
3 years ago
What is 7/16 simplified
Georgia [21]
You cant simplify it . it is already simplified 
7 0
3 years ago
Read 2 more answers
Which number lines have points that represent additive inverses? Check all that apply.
jeka94
<h3>2 Answers: B and D</h3>

===================================================

Explanation:

Choice B is one answer because -2 and 2 are additive inverses that add to -2+2 = 0

Choice D is a similar story. We have -5+5 = 0

In general, if x is some number then -x is its additive inverse. So we can say x+(-x) = 0 or -x+x = 0. In short, additive inverses add to 0.

8 0
3 years ago
Read 2 more answers
How many solutions does this system have?<br> X+ 5y = 0<br> 20y = -4x
AysviL [449]
2 have solutionsof each way if
4 0
4 years ago
Other questions:
  • How many different arrangements of the letters in the word PARALLEL are there ?Type a numerical answer in the space
    5·1 answer
  • 5/6 4/15
    12·1 answer
  • Make n the subject of the formula<br> M=7n
    6·1 answer
  • Kathleen made 29, 38, 45, 42, and 36 points on her assignments.
    11·1 answer
  • (2m^4) • m3<br> Need help ASAP I have the answer but I need help showing work
    13·2 answers
  • Staci is attending a music festival. The ticket to the festival costs $87.96. Staci plans to purchase $30.00 t-shirts from the e
    11·1 answer
  • Use this information to complete activities 1.1
    14·1 answer
  • Select all the equations that have 9 as a solution.
    12·2 answers
  • Find the third side in simplest radical form.
    13·2 answers
  • The length of a side of a square is 32<br>cm find the area​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!