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
Verdich [7]
1 year ago
9

A 20 ohm lamp and a 5 ohm lamp are connected in series and placed across a potential difference of 50 V.

Physics
1 answer:
iogann1982 [59]1 year ago
7 0

Hi there!

1.

Since the two resistors are in series, we can simply add:
R_T = R_1 + R_2 + ... R_n

R_T = 20 + 5 = \boxed{25 \Omega}

2.

In series, the potential difference of each resistor (lamp) ADDS UP. We can begin by finding the current through the circuit using Ohm's law:
V = IR\\\\I = \frac{V}{R_T}

Plug in the values:
I = \frac{50}{25} = 2 A

Now,

we can use Ohm's law to find the individual voltage for each lamp.

20 Ohm lamp:
V = 2 * 20 = \boxed{40 V}

5 Ohm lamp:
V = 2 * 5 = \boxed{10 V}

3.

To solve, we can use the power equation.

P (\text{Watts})= IV

Plug in the values for each.

20 Ohm lamp:
P = 2 * 40 = \boxed{80 W}

5 Ohm lamp:
P = 2 * 10 = \boxed{100 W}

You might be interested in
Galileo was the first scientist to do which of the following? A. estimate the speed of light B. propose the heliocentric theory
Delvig [45]

Galileo Galilei was the first scientist to perform experiments in order to test his ideas. He was also the first astronomer to systematically observe the skies with a telescope.

:)

7 0
3 years ago
Read 2 more answers
A 5 kg rock falls from an 8 m high cliff. What is the speed of the rock when it hits the ground?
Levart [38]

Answer:

3k mph

Explanation:

don't take my answer it is wrong

3 0
3 years ago
Viewing moving objects from pond water under his microscope and named then animalcules
pogonyaev
I think it was either Robert Hook or Anton Van Leevwen Hoek
3 0
3 years ago
Sophie says that geologic maps do not matter because she gets no benefits from them. Why is Sophie wrong? a. She can see the ran
astra-53 [7]
The Answer is Option C 
I think...
Sorry If i am wrong...
4 0
3 years ago
Read 2 more answers
Osteosarcoma cases are rare. Why does this
Hoochie [10]

Answer:

The answer is: It is difficult to tell if fluoride causes this cancer

Explanation:

edgenuite said

8 0
3 years ago
Other questions:
  • Find the wavelength of the ultrasonic wave emitted by a bat if it has a frequency of 4.0 * 10^4 Hz.
    14·2 answers
  • 1. Ca atomic number 2. H2O fission 3. nuclear decay element 4. nuclear synthesis fusion 5. η compound 6. positive charge electro
    5·2 answers
  • Block A, with mass mA, is initially at rest on a horizontal floor. Block B, with mass mB, is initially at rest on the horizontal
    8·1 answer
  • The magnetic field strength within a long solenoid isb=4.0t t, where t is time in seconds. if the radius of thesolenoid is1.0 cm
    8·1 answer
  • Certain rifles can fire a bullet with a speed of 950 m/s just as it leaves the muzzle (this speed is called the muzzle velocity)
    13·1 answer
  • The transfer of energy that occurs when a forceis applied over a distance is _____. Fill in the blank
    7·1 answer
  • 2) How much work is required to pull a sled 15<br> meters if you use 30N of force?
    9·1 answer
  • 4.
    14·1 answer
  • While John is traveling along a straight interstate
    13·1 answer
  • A baseball player throws a baseball at a speed of 40 meters per second at an angle of 30 degrees. What is the velocity of projec
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!