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
melisa1 [442]
3 years ago
12

Suppose the first coil of wire illustrated in the simulation is wound around the iron core 7 times. Suppose the second coil is w

ound around the core N2 = 13 times. Shortly after the switch has been closed, the flux through the second coil of wire changes from 2.1 Wb per turn to 2.7 Wb in each turn of wire over a time interval of 0.3 s. Find the magnitude of the emf induced in the coil.
Physics
2 answers:
Elena L [17]3 years ago
8 0

Answer:

emf=26\ V

Explanation:

Given:

no. of turns in the first coil, n_1=7

no. of turns in the second coil, n_2=13

the change in flux through the secondary coil, d\phi=2.7-2.1=0.6\ Wb

time taken for the change in flux, dt=0.3\ s

  • According to the Faraday's law there will be an emf induced in the coil associated with the rate of change in magnetic flux.

<u>This emf is mathematically given as:</u>

emf=n_2\times \frac{d\phi}{dt}

emf=13\times \frac{0.6}{0.3} (we take no. of turns of the second coil because the rate of change in flux is associated with the second coil)

emf=26\ V

SVETLANKA909090 [29]3 years ago
5 0

Answer:

Emf induced in the coli will be equal to 26 volt

Explanation:

We have given number of turns N = 13

It is given that magnetic flux changes from 2.1 Weber to 2.7 Weber in 0.3 sec

Change in flux d\Phi =2.7-2.1=0.6Weber

Change in time dt = 0.3 sec

We have to find the induced emf

Induced emf is equal to e=N\frac{d\Phi }{dt}=13\times \frac{0.6}{0.3}=26volt

So emf induced in the coil will be equal to 6 volt

You might be interested in
HELP PLEASE BRAINLIEST!!!
Dmitrij [34]
<span>The potential energy decreases liquid particles that are attracted to one another move closer together to form a solid. Temperature remains constant because kinetic energy remains constant</span>
6 0
3 years ago
Read 2 more answers
Which is an example of an exothermic process?
Scorpion4ik [409]

Answer:

an example of an exthermic process is combustion

Explanation:

combustion is like lighting a candle

3 0
3 years ago
What is the relationship between thickness of lens and focal length?​
Ymorist [56]

Thick lens will have shorter and consequently thin lens will have greater focal length. Because, For a thick lens, the optical path length of the light is more, than for a thin lens, thus, the bending of light will be more in case of a thicker lens. Consequently, it has a shorter focal length.

7 0
3 years ago
Two objects must be in contact for them to exert a force on each other. <br> True or False
nevsk [136]

Answer:

False

Explanation:

This proposition is false because by example the sun exerts a force over the earth and them are not in contact

7 0
3 years ago
Suppose your friend claims to have discovered a mysterious force in nature that acts on all particles in some region of space. H
kirill [66]

Answer:

             U = 1 / r²

Explanation:

In this exercise they do not ask for potential energy giving the expression of force, since these two quantities are related

             

         F = - dU / dr

this derivative is a gradient, that is, a directional derivative, so we must have

          dU = - F. dr

the esxresion for strength is

         F = B / r³

let's replace

          ∫ dU = - ∫ B / r³  dr

in this case the force and the displacement are parallel, therefore the scalar product is reduced to the algebraic product

let's evaluate the integrals

            U - Uo = -B (- / 2r² + 1 / 2r₀²)

To complete the calculation we must fix the energy at a point, in general the most common choice is to make the potential energy zero (Uo = 0) for when the distance is infinite (r = ∞)

             U = B / 2r²

we substitute the value of B = 2

             U = 1 / r²

5 0
3 years ago
Other questions:
  • Which best describes the transition from gas to liquid?
    10·2 answers
  • When all parts of a circuit are composed of conducting materials, the circuit is said to be
    10·1 answer
  • In a nuclear power plant, the nuclear reaction is kept from going critical by keeping the rate of reaction safe. How do the cont
    5·2 answers
  • Which of the following is an example of an object that could have a net force greater than zero acting on it?
    10·2 answers
  • If a steel nail is wrapped 8 times with an insulated copper wire and each end of is attached to a 1.5 V battery, we find that it
    15·2 answers
  • The rate at which an object move is it's
    9·1 answer
  • It might be a good idea to talk to your parents about alcohol because:
    10·2 answers
  • Which best describes an acid?
    13·1 answer
  • If two lines in a system of linear equations have the same slope and same y-intercept, how many solutions will the system have?
    6·1 answer
  • A mason stretches a string between two points 70 ft apart on the same level with a tension of 20 lb at each end. If the string w
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!