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
Setler [38]
3 years ago
8

If a 200 turn, 10-3 m2 cross-sectional area coil is immersed in a magnetic field such that the plane of the coil is perpendicula

r to the field. If the magnetic field increases by 6 T/s, then how much voltage is induced
Physics
1 answer:
Stels [109]3 years ago
8 0

Answer:

<h3>1.2 volt induced in coil.</h3>

Explanation:

Given:

Number of turns N =  200

Cross sectional area A = 10^{-3} m^{2}

Rate of increasing magnetic field \frac{dB}{dt} = 6 \frac{T}{s}

From the faraday's law,

Induced emf is given by,

   \epsilon = -N\frac{d \phi}{dt }

Where \phi = magnetic flux

  \phi = AdB \cos(0)          ( because angle between normal coil and field is zero)

Where A = area of coil

Put the value of \phi in above equation,

Here we neglect minus sign

   \epsilon = NA\frac{dB}{dt}

   \epsilon = 200 \times 10^{-3} \times 6

   \epsilon = 1.2 V

Therefore, 1.2 volt induced in coil

You might be interested in
A crane used 250,000 Joules of work to move a beam to the top of a building in 20 seconds. How much power did the crane use?
maria [59]

Answer:

12500W

Explanation:

Given parameters:

Work done  = 250000J

Time taken  = 20s

Unknown:

Power of the crane = ?

Solution:

Power is the defined as the rate at which work is being done;

  Mathematically;

        Power = \frac{work done}{time }

 insert the parameters and solve;

      Power  = \frac{250000}{20}   = 12500W

7 0
3 years ago
Six artificial satellites circle a space station at constant speed. The mass m of each satellite, distance L from the space stat
nikklg [1K]

Answers:

a) T_{2}>T_{5}>T_{1}>T_{3}=T_{6}>T_{4}

b) a_{4}>a_{6}>a_{1}>a_{3}>a_{5}>a_{2}

Explanation:

a) Since we are told the satellites circle the space station at constant speed, we can assume they follow a uniform circular motion and their tangential speeds V are given by:

V=\omega L=\frac{2\pi}{T} L (1)

Where:

\omega is the angular frequency

L is the radius of the orbit of each satellite

T is the period of the orbit of each satellite

Isolating T:

T=\frac{2 \pi L}{V} (2)

Applying this equation to each satellite:

T_{1}=\frac{2 \pi L}{V_{1}}=261.79 s (3)

T_{2}=\frac{2 \pi L}{V_{2}}=1570.79 s (4)

T_{3}=\frac{2 \pi L}{V_{3}}=196.349 s (5)

T_{4}=\frac{2 \pi L}{V_{4}}=98.174 s (6)

T_{5}=\frac{2 \pi L}{V_{5}}=785.398 s (7)

T_{6}=\frac{2 \pi L}{V_{6}}=196.349 s (8)

Ordering this periods from largest to smallest:

T_{2}>T_{5}>T_{1}>T_{3}=T_{6}>T_{4}

b) Acceleration a is defined as the variation of velocity in time:

a=\frac{V}{T} (9)

Applying this equation to each satellite:

a_{1}=\frac{V_{1}}{T_{1}}=0.458 m/s^{2} (10)

a_{2}=\frac{V_{2}}{T_{2}}=0.0254 m/s^{2} (11)

a_{3}=\frac{V_{3}}{T_{3}}=0.4074 m/s^{2} (12)

a_{4}=\frac{V_{4}}{T_{4}}=1.629 m/s^{2} (13)

a_{5}=\frac{V_{5}}{T_{5}}=0.101 m/s^{2} (14)

a_{6}=\frac{V_{6}}{T_{6}}=0.814 m/s^{2} (15)

Ordering this acceerations from largest to smallest:

a_{4}>a_{6}>a_{1}>a_{3}>a_{5}>a_{2}

4 0
2 years ago
16
krek1111 [17]

Explanation:

the table and the wooden block

6 0
3 years ago
Read 2 more answers
Your friend says that if Newton’s third law is correct, no object would ever start moving. Here is his argument: You pull a sled
m_a_m_a [10]

Answer:

Explanation:

You pull a sled exerting a 50 N force on it , sled also exerts a force on you . These forces are action and reaction force , as per third law of Newton . These two forces are equal and  opposite . But they do not act on the same object so they do not cancel each other . They act on different objects , one on the sledge and the other on you . Due to force on sledge , sledge moves in the direction of force or towards you . You will start moving in opposite direction if frictional force of ground is nil or less .

6 0
2 years ago
A circular flat coil that has N turns, encloses an area A, and carries a current i has its central axis parallel to a uniform ma
bogdanovich [222]

Answer:

Torque on the coil will be ZERO

Explanation:

As we know that the magnetic moment of the closed current carrying coil is always along its axis and it is given as

M = N i A

now we know that magnetic field is also along the axis of the coil so here as we know the equation of torque given as

\tau = \vec M \times \vec B

so we have

\tau = M B sin0

\tau = 0

5 0
3 years ago
Other questions:
  • The flow rate of water through a tapered straight horizontal pipe fitting is 5 m/s. The diameter at the entrance is 0.7 m and is
    5·1 answer
  • The German V-2 rocket was the first man made object in space
    13·1 answer
  • A circular test track for cars has a circumference of 4.7 km. A car travels around the track from the southernmost point to the
    13·1 answer
  • The vaule of the g constant (the acceleration of all objects due to gravity)on earth is
    14·1 answer
  • The moon is about 3.8 X 10^5 km from the earth. Show that its average orbital speed about earth is 1026 m/s
    14·1 answer
  • How is science controlled by the governerment
    12·2 answers
  • Hi i can i have some help
    9·1 answer
  • The stars in the sky are organized into groups of stars called constellations which appear near each other in the sky but are no
    5·1 answer
  • A 30-kg child sits at the top of a 3-meter slide. After sliding down, the child is traveling 4 m/s. How much PE does he start wi
    8·1 answer
  • Please help i would really appreciate it
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!