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
ehidna [41]
3 years ago
9

Which of the following statements are true regarding transformers?Check all that apply.

Physics
2 answers:
dangina [55]3 years ago
8 0

Answer:

There are two correct options.

1. A transformer is used to increase or decrease an alternating current voltage.

2. In a transformer, if the secondary coil contains more loops than the primary coil, then it is a step-up transformer.

Explanation:

A transformer is a device which has two coils. One is primary coil and other is secondary coil.

Input is given to primary coil and output is taken out from secondary coil.

A transformer can increase or decrease the output voltage by setting the number of turns in primary and secondary coil.

If the number of turns in primary coil is less than the number of turns in secondary coil, then it is step up transformer. It increases the output voltage.

The relation between the number of turns and the voltage is given by

\frac{N_{s}}{N_{p}}=\frac{V_{s}}{V_{p}}=\frac{I_{p}}{I_{s}}

Where, Np = number of turns in primary coil

Ns = number of turns in secondary coil

Vp = ac voltage across primary coil

Vs = ac voltage across secondary coil

Ip = ac current across primary coil

Is = ac current across secondary coil

lapo4ka [179]3 years ago
6 0

Answer:

In a transformer, if the secondary coil contains more loops than the primary coil, then it is a step-up transformer.

Explanation:

  • A transformer is made up of primary coil and secondary coil. when the number of loops in the secondary coil is less than the primary coil, the transformer is called step down transformer.
  • Also if the number of loops in the secondary coil is more than the primary coil, then it is called a step-up transformer.  In a step-up transformer the voltage output will be greater.
You might be interested in
What is terrestrial radiation?
Feliz [49]
C) Radiation that comes from Earth...... Hope it helps, Have a nice day :)
6 0
2 years ago
Read 2 more answers
The force of gravity is twice as great on a 2-kg rock as on a 1-kg rock. Why then, dose the 2-kg rock not fall with twice the ac
Phoenix [80]

Answer:

because all objects fall at a rate of 9.8m/s²

8 0
2 years ago
Q:-What is speed????​
Margarita [4]

Explanation:

In everyday use and in kinematics, the speed of an object is the magnitude of the rate of change of its position with time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.

SI unit: m/s, m s−1

s=d/t

5 0
2 years ago
Help!
dmitriy555 [2]

Answer:

1.It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

2.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

3.In nuclear reactions, mass is never conserved—some mass is exchanged for energy and energy for mass. Nuclear reactions take place in an atom's nucleus. In a spontaneous nuclear reaction, such as radioactive decay, mass is "lost" and appears as energy in the form of particles or gamma rays.

4.In a nuclear reaction, mass decreases and energy increases. The sum of mass and energy is always conserved in a nuclear reaction.

5.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

Explanation:

hope it helps

7 0
2 years ago
Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. The
goldfiish [28.3K]
I think the answer to your question is B
7 0
3 years ago
Other questions:
  • If it takes 150 N of force to move a box. 10 meters, what is the work done on
    14·1 answer
  • After six half-lives, what percentage of a radioactive sample will remain?
    11·2 answers
  • A cross-country skier moves 32 meters westward, then 54
    7·1 answer
  • What is the magnitude of δv12 if the bulb is removed from the socket (i.e. the circuit is not closed)?
    14·2 answers
  • The moment of inertia of a uniform equilateral triangle with mass m and side length a about an axis through one of its sides and
    15·1 answer
  • A car engine changes chemical potential energy into the blank energy of the moving car?
    8·1 answer
  • W imieniu państwa napisz zaproszenie dla rodzeństwa na uroczystą kolacje
    14·1 answer
  • 10 turns of wire are closely wound around a pencil as shown in the figure. when measured using a scale as shown, the length of t
    8·1 answer
  • How would the elastic potential energy change if the displacement is multiplied by five?
    15·1 answer
  • The more diverse an ecosystem is —
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!