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
Zina [86]
3 years ago
13

A circular loop of wire with a radius of 15.0 cm and oriented in the horizontal xy-plane is located in a region of uniform magne

tic field. A field of 1.2 T is directed along the positive z-direction, which is upward. (a)If the loop is removed from the field region in a time interval of 2.3 ms, find the average emf that will be induced in the wire loop during the extraction process.
Physics
1 answer:
bekas [8.4K]3 years ago
6 0

Answer:

Explanation:

Given that,

Radius r = 15cm = 0.15m

Area of the circular loop can be determined using the formula for area of a circle

A = π r²

A = π × 0.15²

A = 0.0708 m²

Magnetic field B = 1.2T in positive z direction

B = 1.2 •k T.

If loop is remove from the field in the time interval

∆t = 2.3ms = 2.3×10^-3s

We want to find the average EMF and it is given as

ε = —∆Φ/∆t

The final flux is zero

Φf = 0

Where magnetic flux is given as

Φi = BA Cosθ

Where θ=0 since the area and the magnetic field point in the same direction.

Φi = BA Cos0

Φi = BA

Φi = 1.2 × 0.0708

Φi = 0.0848 Vs

Then, ε = —∆Φ/∆t

ε = —(Φf — Φi) / ∆t

ε = —(0-0.0848) / (2.3×10^-3)

ε = 0.0848 / (2.3×10^-3)

ε = 36.88 V

The EMF is 36.88 Volts

You might be interested in
When a sound wave strikes a smooth, hard surface, the wave is
NNADVOKAT [17]
The wave is reflected
5 0
3 years ago
Read 2 more answers
When a coil is carrying a current of 25.0 A that is increasing at 145 A/s the induced emf in the coil has magnitude 3.70 mV.
Aleks04 [339]

Answer:

a) 25.5 µH

b) 22.95 mV

Explanation:

Induced emf in a inductor is given by

E = L * di/dt, where

E is the voltage of the circuit

L is the inductance of the circuit

di/dt if the rate of inductance

A

So we have

0.0037 = L * 145

L = 0.0037 / 145

L = 0.0000255

L = 25.5 µH

B

i(t) = 225t²

Recall that

E = L * di/dt, so that

E = 25.5 µH * |225t²|

Differentiating with respect to t, we have

E = 25.5 * 2 * 225t

E = 25.5 * 450t

Solving for t = 2,we get

E = 25.5 * 450(2)

E = 25.5 * 900

E = 22950 µV or

E = 22.95 mV

6 0
3 years ago
Which substance is used in fertilizers?
mezya [45]
Nitric acid (NHO3) because plants need nitrogen to survive, hope this helped.
3 0
3 years ago
Read 2 more answers
What is the difference between living, nonliving, and dead
Natasha2012 [34]

Answer:

Living means something which biologically active, and can function naturally.

Non loving is something which cannot function naturally and biologically.

Dead is something that was living for a certain period, but now it doesn't.

8 0
3 years ago
A 1,600 kg train car rolling freely on level track at 16 m/s bumps into a 1.0 × 103 kg train car moving at 10.0 m/s in the same
emmainna [20.7K]
This item is solved through the concept of the conservation of momentum which states that the momentum before and after collision should be equal. 
                                   momentum = mass x velocity
            (1,600 kg)(16 m/s) + (1.0x10^3 kg)(10 m/s) = (1600 + 1000 kg)(x)
The value of x is 13.69 m/s. Thus, their final speed is approximately letter D. 14 m/s. 
6 0
4 years ago
Other questions:
  • If R is the total resistance of three resistors, connected in parallel, with resistances R1, R2, R3, then 1 R = 1 R1 + 1 R2 + 1
    11·1 answer
  • A circuit maintains a constant resistance. If the current in the circuit is doubled, what is the effect on the power dissipated
    12·1 answer
  • Why vacuum flask is known as thermos flak?
    15·1 answer
  • Which way does the blue arrow on the earth point
    8·1 answer
  • Form hypothesis: Where do you think we humans get energy?
    7·2 answers
  • Joint replacement are often made of the element titanium. Which type of matter is titanium
    11·2 answers
  • When trying to predict the lowest temperature that will be reached overnight, forecasters pay close attention to the dew-point t
    7·1 answer
  • How much heat transfer is necessary to raise the temperature of a 13.6 kg piece of ice from −20.0ºC to 130ºC? specific heat capa
    10·1 answer
  • Within a few sentences, explain the difference between meiosis and mitosis.
    8·1 answer
  • A particle zips by us with a Lorentz factor (γ) of 1.12. Then another particle zips by us moving at twice the speed of the first
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!