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
Anvisha [2.4K]
3 years ago
5

A 5-turn square loop (10 cm along aside, resistance = 4.0 ) is placed in a magnetic field that makes an angle of30o with the pla

ne of the loop. The magnitude of thisfield varies with time according to B =0.50t2, where t is measured in s andB in T. What is the induced current in the coil att = 4.0 s?
1. 25 mA
2. 50mA
3. 13mA
4. 43mA
5. 5.0 mA
Physics
1 answer:
andreev551 [17]3 years ago
4 0

Answer:

Explanation:

Area A of the coil = .1 x .1 = .01 m²

no of turns n = 5

magnetic field B = .5 t²

Flux  Φ perpendicular to plane passing through it.= nBA sin30

rate of change of flux

dΦ/dt = nAdBsin30 / dt

= nA d/dt (.5t²x .5 )

= nA x 2 x .25 x t

At t = 4s

dΦ/dt = nA x 2

= 5x .01 x 2

= .1

current = induced emf / resistance

= .1 / 4

= .025 A

= 25 mA.

You might be interested in
A proton and an electron are placed in an electric field. Which undergoes the greater acceleration?
iren2701 [21]

Newton's 2nd law:

Fnet = ma

Fnet is the net force acting on an object, m is the object's mass, and a is the acceleration.

The electric force on a charged object is given by

Fe = Eq

Fe is the electric force, E is the electric field at the point where the object is, and q is the object's charge.

We can assume, if the only force acting on the proton and electron is the electric force due to the electric field, that for both particles, Fnet = Fe

Fe = Eq

Eq = ma

a = Eq/m

We will also assume that the electric field acting on the proton and electron are the same. The proton and electron also have the same magnitude of charge (1.6×10⁻¹⁹C). What makes the difference in their acceleration is their masses. A quick Google search will provide the following values:

mass of proton = 1.67×10⁻²⁷kg

mass of electron = 9.11×10⁻³¹kg

The acceleration of an object is inversely proportional to its mass, so the electron will experience a greater acceleration than the proton.

6 0
3 years ago
Identifying Mechanical Energy
arsen [322]
Bruh ima be honest with you idek
3 0
3 years ago
Read 2 more answers
For work to be done on an object,
djverab [1.8K]

Answer:B

Explanation:

For work to be done, the object must move some distance as a result of a force

3 0
3 years ago
The cytoplasm of a cell consists mainly of water.
ankoles [38]
Deal! The answer is true
5 0
3 years ago
Read 2 more answers
On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen se
zhuklara [117]
It's cold outside, the water vaper in your breath condenses into tiny droplets of liquid water and ice that you can see.
3 0
3 years ago
Read 2 more answers
Other questions:
  • The velocity of the transverse waves produced by an earthquake is 8.9 km/s, and that of the longitudinal waves is 5.1 km/s. A se
    8·1 answer
  • What is the frequency of an x- ray if the wavelength is 4.5 E - 10m?
    11·1 answer
  • What is wave motion​
    10·1 answer
  • How does the frequency of gamma rays compare to the frequency of microwaves?
    8·1 answer
  • a student pushes on a crate with a force of 100 N directed to the right. what force does the crate exert on a student
    13·1 answer
  • Now assume that the frictional force f is not at its maximum value. What is the relation between the torque Ï„ applied to each w
    10·2 answers
  • 10 cm^3 of iron have a smaller
    12·1 answer
  • A train increases its speed steadily from 10 m/s to 20 m/s in
    8·1 answer
  • A form of energy NOT associated with the particles of objects is
    8·1 answer
  • The block in the figure below has a mass of 5.1 kg and it rests on an incline of angle . You pull on the rope with a force F = 3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!