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
Anuta_ua [19.1K]
3 years ago
12

What is the function of a transformer?Why is this done?

Physics
1 answer:
ollegr [7]3 years ago
8 0

Answer:

A transformer is an electrical device for changing the size of an AC voltage

Explanation:

A transformer is an electrical device for changing the size of an alternating current voltage.it acts to increase or decrease the electromotive force of an alternating current

You might be interested in
For copper, ρ = 8.93 g/cm3 and M = 63.5 g/mol. Assuming one free electron per copper atom, what is the drift velocity of electro
viktelen [127]

Answer:

V_d = 1.75 × 10⁻⁴ m/s

Explanation:

Given:

Density of copper, ρ = 8.93 g/cm³

mass, M = 63.5 g/mol

Radius of wire = 0.625 mm

Current, I = 3A

Area of the wire, A = \frac{\pi d^2}{4} = A = \frac{\pi 0.625^2}{4}

Now,

The current density, J is given as

J=\frac{I}{A}=\frac{3}{ \frac{\pi 0.625^2}{4}}= 2444619.925 A/mm²

now, the electron density, n = \frac{\rho}{M}N_A

where,

N_A=Avogadro's Number

n = \frac{8.93}{63.5}(6.2\times 10^{23})=8.719\times 10^{28}\ electrons/m^3

Now,

the drift velocity, V_d

V_d=\frac{J}{ne}

where,

e = charge on electron = 1.6 × 10⁻¹⁹ C

thus,

V_d=\frac{2444619.925}{8.719\times 10^{28}\times (1.6\times 10^{-19})e} = 1.75 × 10⁻⁴ m/s

4 0
3 years ago
Read 2 more answers
A heat engine is a device that uses _____to produce useful work.
MakcuM [25]

A heat engine is a device that uses heat to produce useful work.

3 0
3 years ago
Read 2 more answers
When you lift a box, what is the effort force?
aleksandrvk [35]

Answer:

effort force: The force used to move an object over a distance. resistance force: The force which an effort force must overcome in order to do work on an object via a simple machine. ideal mechanical advantage: The factor by which a mechanism multiplies the force put into it.

Explanation:

5 0
2 years ago
What Is Rotational Motion?​
mars1129 [50]

Answer:

the motion of an object in a circular path , in a fixed orbit

8 0
2 years ago
Read 2 more answers
How many days does the earth take to rotate around the sun
ValentinkaMS [17]

Answer:

1 day

Explanation:

The spinning movement of Earth around its axis is known as Earth's rotation.

The Earth rotates around the Sun in 1 day that is 24 hours but once in every 23 hours, 56 minutes, and 4 seconds with respect to other stars.

According to the Indian astronomer Aryabhata, Earth rotates about its axis daily.

3 0
3 years ago
Other questions:
  • Gravitational potential energy is a function of the _____ and the ________ of an object.
    7·2 answers
  • Order the seven basic spectral types from hottest to coldest.
    12·1 answer
  • Rahul wants to change the motion map shown so that it shows uniform circular motion. What change should Rahul make?
    6·2 answers
  • The gauge pressure inside an alveolus with a 200 µm radius is 25 mmHg, while the blood pressure outside is only 10 mmHg. Assumin
    13·1 answer
  • I'll give you branliest- A student uses a counting technique to estimate time. She counts "one one-thousand, two one-thousand, t
    12·2 answers
  • It took 1700 J of work to stretch a spring from its natural length of 2 m to a length of 6 m. Find the spring constant k.
    6·1 answer
  • Baby Susie's pediatrician notices that one of her eyes rotates outward and that she does not appear to be using it for vision. W
    13·1 answer
  • How far something moves in a specific amount of time
    10·2 answers
  • Please help me......
    8·1 answer
  • Can someone help me on boding elements? please im struggling. look at the picture and also if you answer can you have a picture
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!