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
sweet-ann [11.9K]
3 years ago
7

Below is a circuit schematic of sources and resistors (Figure 3). VS = 10V , R1 = 100Ω, R2 = 50Ω, R3 = 25Ω, IS = 2A. Calculate t

he voltage V3 and the current i1 in amps that goes through R3 from left to right.

Physics
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

V_3\approx 4.28\,\,V

I_1=0.0572\,\,amps

I_3\approx 0.171\,\,amps

Explanation:

Notice that this is a circuit with resistors R1 and R2 in parallel, connected to resistor R3 in series. It is what is called a parallel-series combination.

So we first find the equivalent resistance for the two resistors in parallel:

\frac{1}{Re}= \frac{1}{R1}+\frac{1}{R2}\\\frac{1}{Re}= \frac{1}{100}+\frac{1}{50}\\\frac{1}{Re}= \frac{3}{100}\\Re=\frac{100}{3} \,\,\Omega

By knowing this, we can estimate the total current through the circuit,:

Vs=I\,*\,(\frac{100}{3} +25)\\10=I\,*\,\frac{175}{3} \\I=\frac{30}{175} \,amps

So approximately 0.17  amps

and therefore, we can estimate the voltage drop (V3) in R3 uisng Ohm's law:

V_3=\frac{30}{175} *\,25=\frac{30}{7} \approx 4.28\,\,V

So now we know that the potential drop across the parellel resistors must be:

10 V -  4.28 V = 5.72 V

and with this info, we can calculate the current through R1 using Ohm's Law:

I_1=\frac{V_1}{R_1} =\frac{5.72}{100} =0.0572\,\,amps

You might be interested in
Whats 6 3/7 ×1 5/9.
aniked [119]
6 3/7 * 1 5/9
45/7 * 14/9
630/63
10
7 0
3 years ago
Read 2 more answers
A rectangular barge, 5.2 m long and 2.4 m wide, floats in fresh water. Suppose that a 410-kg crate of auto parts is loaded onto
sesenic [268]
<h2>Answer:</h2><h2>The depth of barge float=3 cm</h2><h2>Explanation:</h2>

Length of rectangular barge=5.2 m

Width of rectangular barge=2.4m

Mass of crate=410 kg

Let h be the height of barge float

Volume of barge float=l\times b\times h=5.2\times 2.4\times h=12.48h

Density of water=10^3kg/m^3

Weight of water displaced by barge=Buoyant force=-Weight of horse

Volume\;of\;water\times density\;of\;water\times g=410\times g

12.48h\times 1000=410

h=\frac{410}{12.48\times 1000}=0.03 m

1 m=100 cm

0.03 m=0.03\times 100=3cm

Hence, the depth of barge float=3 cm

<h2 />
4 0
3 years ago
Read 2 more answers
24. Most cleaning solutions like soap, with a pH of 8-9 are examples of a(n)
Sphinxa [80]

24. A, natural ph scale for it not to be acidic is 7-8

25. A, not sure about this one

26. A, looked it up

27. A, because it has to be shaken up to make the mixture appear and taste more combined.

28. D, i just guessed

29. D, that answer is stupid so it is the answer because it said not a property

30. A, looked it up

8 0
3 years ago
In DC motor, the split rings are made of <br> A) steel B) copper C) wood D) glass
USPshnik [31]

I think is

(B) Copper

8 0
3 years ago
The influence of likes and dislikes on thinking called?
jenyasd209 [6]
'A biased oppinion'
 When you like something and right a report on it your opinion will come through about that subject, the same thing occurs if you dislike something. 
:) Hope this helps x
3 0
3 years ago
Other questions:
  • Thermal energy depends on an object’s
    13·2 answers
  • to remove a tight-fitting jar, megan runs the lid under hot water. What happends to the jar lid when its temperature increases?
    14·1 answer
  • Assuming that the limits of the visible spectrum are approximately 380 and 700 nm, find the angular range of the first-order vis
    15·1 answer
  • If heat is transferred away from a gas, which could happen?
    6·1 answer
  • Two lightbulbs are wired in series and connected to a 12-volt battery. what happens to the current through the battery if a thir
    11·2 answers
  • When you jump from a height to the ground, you let your legs bend at the knees as your feet hit the floor.Why we do this in term
    5·2 answers
  • The Pioneer 10 spacecraft was launched in March 1972 to explore the solar system. Pioneer 10 has continued on its journey and is
    8·2 answers
  • there are 3 balls , ball 1 has a mass of 2 kg ,ball number 2 has a mass of 0.5 kg, and ball number 3 has the mass of 0.02 kg ...
    7·1 answer
  • I need help with number 7 and 8. Gravity is 10N NOT 9.8N for these problems
    10·1 answer
  • Which option is an example of an object that has potential energy followed by an object that has kinetic energy?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!