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
Ann [662]
3 years ago
7

A coil of wire containing N turns is in an external magnetic field that is perpendicular to the plane of the coil and it steadil

y changing. Under these circumstances, an emf ε is induced in the coil. If the rate of change of the magnetic field and the number of turns in the coil are now doubled (but nothing else changes), what will be the induced emf in the coil?
Physics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

The Resultant Induced Emf in coil is 4∈.

Explanation:

Given that,

A coil of wire containing having N turns in an External magnetic Field that is perpendicular to the plane of the coil which is steadily changing. An Emf (∈) is induced in the coil.

To find :-

find the induced Emf if rate of change of the magnetic field and the number of turns in the coil are Doubled (but nothing else changes).

So,

   Emf induced in the coil represented by formula

                          ∈  =   -N\frac{d\phi}{dt}                                  ...................(1)

                                          Where:

                                                    .   \phi = BAcos\theta     { B is magnetic field }

                                                                                 {A is cross-sectional area}

                                                    .  N = No. of turns in coil.

                                                    .  \frac{d\phi}{dt} = Rate change of induced Emf.

Here,

Considering the case :-

                                    N1 = 2N  &      \frac{d\phi1}{dt} = 2\frac{d\phi}{dt}

Putting these value in the equation (1) and finding the  new emf induced (∈1)

                           

                                      ∈1 =-N1\times\frac{d\phi1}{dt}

                                      ∈1 =-2N\times2\frac{d\phi}{dt}

                                       ∈1 =4 [-N\times\frac{d\phi}{dt}]

                                        ∈1 = 4∈             ...............{from Equation (1)}      

Hence,

The Resultant Induced Emf in coil is 4∈.        

                           

You might be interested in
Gravity can be described as
Agata [3.3K]
 I think it is B because gravity is <span>the field force of mutual attraction between any two masses, especially an object and the earth</span>
6 0
3 years ago
Read 2 more answers
you have been provided with an insulated wire , voltmeter or a battery with a charge of 10ohms, a bulb, a switch and a resistor
eduard
I’m trying to get my points up I have the same question
4 0
2 years ago
Have the rest of my points ( 100 points)<br> SAY SOMETHING NICE DOWN BELOW AND FREE BRAINLEIST
Mashcka [7]

Answer:

ok

Explanation:

hi how was your day?

stay safe hope you have a good day

6 0
3 years ago
Read 2 more answers
If a 2 kg spring is compressed by exerting a force of 10 newtons a distance of 50 cm how much work is done?
Elina [12.6K]
Convert cm into meters,
50/100=0.5m

work done= 10x0.5
=5J

we dont consider the weight of the spring as it acts downwards.
5 0
3 years ago
What happens when a chemical change takes place?
mart [117]
<span>When chemical change takes place, the atoms in the reactants rearrange and bond together differently to form one or more new products with different characteristics. </span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • A person pours 330 g of water at 55°C into an 855-g aluminum container with an initial temperature of 10°C. The specific heat of
    14·1 answer
  • A projectile is thrown at an angle 30° from horizontal. Which statement about its vertical component of velocity is true?
    8·1 answer
  • The _________ states that the entropy of a closed system must always increase.
    13·1 answer
  • A cyclist travels 20km in 4hrs.What speed did the cyclist cycle at?​
    13·2 answers
  • 1) Calculate the torque required to accelerate the Earth in 5 days from rest to its present angular speed about its axis. 2) Cal
    13·1 answer
  • PLEASE HELP AND HURRY
    5·2 answers
  • Ac=v^2/r solve for v, solve for r
    11·2 answers
  • In any vector space au=bu implies a=b ? Trou or False​
    12·2 answers
  • In the context of communication media, _____ media provide a physical path along which signals are transmitted, including twiste
    15·1 answer
  • Calculate the momentum, A bald eagle with a mass of 26.4 kg and velocity of 15.6 m/s​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!