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
Sladkaya [172]
3 years ago
14

18. A circuit contains a 10 ohm resistor, a 50 ohm resistor, and an 80 ohm resistor connected in parallel. If you test this circ

uit with a DMM, you should read a total resistance value
A. 0.13 ohms
B. 75 ohms
C. 140 ohms
D. 7.55 ohms
Physics
1 answer:
lutik1710 [3]3 years ago
4 0

The equivalent resistance is D) 7.55 \Omega

Explanation:

The equivalent resistance of n resistors in parallel is given by the equation:

\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2}+...+\frac{1}{R_n}

For three resistors such as in this problem, the equation becomes

\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}

where we have the following:

R_1 = 10 \Omega is the resistance of the 1st resistor

R_2 = 50 \Omega is the resistance of the 2nd resistor

R_3 = 80 \Omega is the resistance of the 3rd resistor

Substituting, we find the equivalent resistance:

\frac{1}{R}=\frac{1}{10}+\frac{1}{50}+\frac{1}{80}=0.133 \Omega^{-1}

R=\frac{1}{0.133}=7.55 \Omega

Learn more about resistance:

brainly.com/question/2364338

brainly.com/question/12246020

#LearnwithBrainly

You might be interested in
A certain computer chip that has dimensions of 3.67 cm and 2.93 cm contains 3.5 million transistors. If the transistors are squa
Evgesh-ka [11]

Answer:

1.56 × 10^-3 cm.

Explanation:

So, we are given the following parameters from the question above;

Length = 3.67 cm, breadth = 2.93 cm, and the number of embedded transistors = 3.5 million.

Step one: find the area of the computer chip.

Therefore, Area = Length × breadth.

Area = 3.67 cm × 2.93 cm.

Area of the computer chip = 10.7531 cm^2. = 10.75 cm^2.

Step two: find the area of one transistor

The area of one transistor is; (area of the computer chip) ÷ (number of embedded transistors).

Hence;

The area of one transistor= 10.7531/4.4 × 10^6.

The area of one transistor= 2.44 × 10^-6 cm^2.

=> Note that We have our transistors as square, therefore;

The maximum dimension = √ (2.44 × 10^-6) cm^2.

The maximum dimension= 1.56 × 10^-3 cm.

7 0
3 years ago
What transfers energy in the form of vibrating electric and magnetic fields?
Rashid [163]
Electromagnetic waves are waves that consist of vibrating electric and magnetic fields. They transfer energy through matter or across space. The transfer of energy by electromagnetic waves is called electromagnetic radiation. ... The two vibrating fields together form an electromagnetic wave.
5 0
3 years ago
Read 2 more answers
Calculate the total resistance in a series circuit made up of resistances of 3Ω, 4Ω, and 5Ω.
-BARSIC- [3]
The total resistance in a series circuit is equal to the sum of all resistors (R total = ΣRi).

R total = R1 + R2 + R3 = (3 + 4 + 5) Ω = 12 Ω
5 0
3 years ago
You lift a 50 N object 2 meters off the ground what work did you do on the object
mixer [17]
Work equals force × displacement (distance between initial point and end point is displacement)
if u follow this it becomes
work = 50 × 2 which is equal to 100

comment if u have more questions
4 0
3 years ago
Describe how water may be treated before people use it
brilliants [131]
Water is treated by purifying it by adding slaked lime or potash alum

3 0
3 years ago
Read 2 more answers
Other questions:
  • The strength of an electric field depends on the
    11·2 answers
  • Which method is the typical first step when scientists communicate their scientific results? placing the results on an Internet
    6·2 answers
  • What happenes to our body temperature on a cold winter day or a hot summer day
    5·1 answer
  • When the k. E of
    10·2 answers
  • If you enjoyed teaching small or large classes and being active every day which career would be a good fit for you
    5·1 answer
  • What are three ways a driver can cause a car to accelerate?
    14·2 answers
  • Testing shows that a sample of wood from an artifact contains 12.5% of the original amount of carbon-14. Given that the half-lif
    14·2 answers
  • What is velocity ratio? It is impossible to get a perfect machine in practical life, why?<br>​
    11·1 answer
  • Why is there more potential for wind energy in the upper himalayan in nepal?​
    12·1 answer
  • The equivalent resistance of a series combination of resistors is always greater than any individual resistance
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!