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
never [62]
3 years ago
12

The primary coil of a transformer has 200 turns and the secondary coil has 800 turns. The power supplied to the primary coil is

400 watts. What is the power generated in the secondary coil if it is terminated by a 20-ohm resistor?
Physics
1 answer:
Arisa [49]3 years ago
5 0

Answer:

400 Watts

Explanation:

The main function of a voltage transformer is to change alternating current (ac) voltage from one voltage level to another. The relationship between the primary coil and secondary coil of a transformer is a function of ratio of the voltage or current and number of turns or loop. The ratio of the voltages between the two coils is equal to the ratio of number of loops in the two coils.

                  \frac{V_{out} }{V_{in}} = \frac{V_{s}}{p}

Varying the number of winding in the primary and secondary coils allows the transformer to step-up or step-down voltages while power is neither increased nor decreased in the primary or secondary except for some minor losses such as iron losses, copper losses, hysteresis losses, eddy current losses, stray loss, and dielectric losses. Therefore, the power in the primary and secondary are the same. The power supplied to the 20-ohm resistor terminal in the secondary coil will be 400 Watts.

You might be interested in
What the law of physics?
Elanso [62]
The basic laws of physics<span> fall into two categories- classical </span>physics<span> that deals with the observable world, and atomic </span>physics<span> that deals with the interactions between elementary and sub atomic particles</span>
5 0
3 years ago
Which chart provides the correct number of neutrons for each isotope of tin (Sn)?
Trava [24]
We know, Atomic mass = Atomic number + number of neutrons
Here, Atomic mass - 50 = number of neutrons [ as A.N. = 50 ]

So, According to our info. only option B can be correct, as the difference between atomic mass & number of neutrons is 50, which is atomic number of Tin (Sb)

In short, Your Answer would be Option B

Hope this helps!
6 0
3 years ago
A source emits monochromatic light of wavelength 495 nm in air. when the light passes through a liquid, its wavelength reduces t
Katyanochek1 [597]
By definition, the refractive index is
n = c/v
where c =  3 x 10⁸ m/s,  the speed of light in vacuum
v = the speed of light in the medium (the liquid).

The frequency of the light source is
f = (3 x 10⁸ m/s)/(495 x 10⁻⁹ m) = 6.0606 x 10¹⁴ Hz

Because the wavelength in the liquid is 434 nm = 434 x 10⁻⁹ m, 
v = (6.0606 x 10¹⁴ 1/s)*(434 x 10⁻⁹ m) = 2.6303 x 10⁸ m/s

The refractive index is (3 x 10⁸)/(2.6303 x 10⁸) = 1.1406

Answer:  a.  1.14
6 0
3 years ago
QuesLUI 2 UI IU
Alika [10]

Answer:

D) The given reaction is Exothermic, because energy is released

Explanation:

Here, given that Zinc is added to a beaker containing hydrochloric acid.

Also, the beaker gets warm.

⇒The energy is released in the form of heat.

EXOTHERMIC reactions are those type of reactions in which energy is released in the form of heat.

When the beaker gets warm, the reaction is exothermic in nature.

Hence, the given reaction is Exothermic, because energy is released

3 0
3 years ago
What is the conversion factor between km/h and mi/h
Aloiza [94]
<span> 1 mi = 1.609 km
so X mi/hr = 1.609 * X km/hr hope this helps!!</span>
5 0
3 years ago
Other questions:
  • Please hurry need ASAP!!! When a pendulum swings, at which point is kinetic energy highest?
    9·1 answer
  • The ultimate source of energy for almost all living organisms is A. animals. B. bacteria. C. plants. D. the Sun.
    10·2 answers
  • What is the frequency of a wave?
    8·1 answer
  • Mars was once similar to Earth in that
    15·1 answer
  • In 2009, usain bolt of jamaica set a world record of 9.58 s in the 100-m dash. what was his average speed? give your answer in k
    15·1 answer
  • When the person is skating from the bottom of the track back up to the top, her potential energy _______ . When the person is sk
    7·1 answer
  • The location of a particle is measured with an uncertainty of 0.15 nm. One tries to simultaneously measure the velocity of this
    13·1 answer
  • Why doesnt the moon crash towards earths surface?
    15·2 answers
  • Tin shears have longer handles than the scissors used to cut cloth why ​
    12·1 answer
  • If he leaves the ramp with a speed of 30.5 m/s and has a speed of 28.7 m/s at the top of his trajectory, determine his maximum h
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!