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
The fact that some well-known studies have been repeated without finding results consistent with those in the initial report des
ValentinkaMS [17]

Answer:

Replication Crisis

Explanation:

Replication crisis in psychology- It refers to the concerns about credibility of finding the results in psychological science.

6 0
2 years ago
If the room radius is 4.5 m, and the rotation frequency is 0.8 revolutions per second when the floor drops out, what is the mini
kondaur [170]
<span>The force of static friction F equals the coefficient of friction u times the normal force N the object exerts on the surface: F = uN. N is the centripetal force of the wall on the people; N = ma_N, where m is the mass of the people and a_N is the centripetal acceleration. The people will not slip down if F is greater than the force of gravitation: F = uma_N > mg, or u > g/a_N. a_N is the velocity v of the people squared divided by the radius of the room r: a_N = v^2/r. The circumference of the room is 2 pi r = 28.3 m. So v = 28.3 * 0.8 m/sec = 22.6 m/sec. So a_N = 114 m/sec^2. g = 9.81 m/sec^2, so u must be at least 9.81/114 = 0.086.</span>
3 0
2 years ago
Explain resolution of Force​
Margarita [4]

Answer:

it is defined as splitting up the given force into a number of components, without changing its effects on the body is called resolution of forces. A force is generally resolved along with two mutually perpendicular directions.

Explanation:

7 0
3 years ago
Can u help me with C
Vladimir79 [104]
I believe it would be 2m/s.
6 0
3 years ago
Read 2 more answers
Please help on this one?
butalik [34]

B. +Q, + W are the correct sign

7 0
2 years ago
Read 2 more answers
Other questions:
  • A boat in a race accelerates uniformly at 0.2 m/s² for 18 seconds to reach a final speed of 6 m/s. Work out the initial speed of
    14·1 answer
  • If you drive 125 km in 2 hours, what is your average speed
    11·2 answers
  • In which situation is no work considered to be done by a force?
    10·1 answer
  • Which of the following are relatively unchanged fragments from the early period of planet building in the solar system? a. aster
    9·1 answer
  • A 8.1 kg object initially at rest is pushed down a 15.0 m tall hill. What is the speed of the object at the bottom of the hill?
    10·1 answer
  • A 10.0-g bullet is fired into a stationary block of wood having mass 5.00 kg. The bullet embeds 10 pts into the block and the sp
    6·1 answer
  • I need help pls! sooner is preferable than later! thank you!​
    10·1 answer
  • Calculate the instantaneous speed of<br> an apple 8 seconds after being dropped<br> from rest.
    12·1 answer
  • How does the construction of dams positively affect natural resources?
    14·1 answer
  • Determine the object of pendulum of length 90m at sea level if gravity is 10m/s​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!