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
Novosadov [1.4K]
3 years ago
12

A square loop of side 7 cm is placed with the nearest side 2 cm from a long wire carrying a current that varies with time at a c

onstaent rate of 9 A/s. (Assume the loop and the wire lie in the same plane. Further assume I- 0at t 0. Enter the magnitudes.) (a) Use Ampère's law and find the magnetic feld from the current in the wire as a function of time and dstance from the wire. (Use the folowing as necessary: j is in meters and t is in seconds. Do not include units in your answer) , and t. Assume 8 is in teslas, r Br, t) (b) Determine the magnetic flux through the loop. (Use the following as necessary: and t. Assume is in T m and t is in seconds. Do not include units in your answer) (c) If the loop has a resistance of 3 0, how much induced current flows in the loop (in nA)) nA
Physics
1 answer:
ioda3 years ago
8 0

Answer:

Explanation:

side of the square loop, a = 7 cm

distance of the nearest side from long wire, r = 2 cm = 0.02 m

di/dt = 9 A/s

Integrate on both the sides

\int _{0}^{i}di =9\int _{0}^{t}dt

i = 9t

(a) The magnetic field due to the current carrying wire at a distance r is given by

B = \frac{\mu_{0}i}{2\pi r}

B = \frac{\mu_{0}\times 9t}{2\pi r}

(b)

Magnetic flux,

\phi=\int B\times a dr

\phi=\int \frac{\mu_{0}\times 9t}{2\pi r}\times a dr

\phi=\frac{\mu_{0}\times 9t\times a}{2\pi}\times ln\left ( \frac{2 + 7}{2} \right )

\phi=\frac{\mu_{0}\times 9t\times 0.07}{2\pi}\times ln(4.5)

\phi = 1.89 \times 10^{-7}t

(c)

R = 3 ohm

e = -\frac{d\phi}{dt}

magnitude of voltage is

e = 1.89 x 10^-7 V

induced current, i = e / R = (1.89 x 10^-7) / 3

i = 6.3 x 10^-8 A

You might be interested in
Using your knowledge of electronics, explain how these circuits operate and what kind of gate each is.
Vera_Pavlovna [14]

Answer:

I don't know about these problems at all.

Explanation:

I don't know about physics at all

4 0
3 years ago
A 0.041-kg bullet has a kinetic energy of 600j. What is the velocity of the bullet?
Paladinen [302]

171.0798 M/S

In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

Was this helpful

5 0
3 years ago
Energy can be transformed from one form to another. The diagram shows one such process.
densk [106]

Answer:

chemical to nuclear and radiant

8 0
3 years ago
Read 2 more answers
Which is greater - the average depth of the ocean, or the average elevation of the continents?
Elza [17]
The average depth of the ocean
8 0
3 years ago
Read 2 more answers
If the speed of light in a substance is 2.26 x 10^8 m/s, what is the index of refraction of that substance?
vladimir1956 [14]

Answer:

1.33

Explanation:

speed of light in vacuum, c = 3 x 10^8 m/s

speed of light in medium, v = 2.26 x 10^8 m/s

The refractive index of the medium is given by

μ = speed of light in vacuum / speed of light in medium

μ = (3 x 10^8) / (2.26 x 10^8)

μ = 1.33

4 0
3 years ago
Other questions:
  • A bodybuilder loads a bar with 550 Newtons (~125 pounds) of weight and pushes the bar over her head 10 times. Each time she lift
    11·2 answers
  • What is the ostrich's average acceleration from 9.0 to 18 seconds?
    6·1 answer
  • Tech A says that hydraulic braking systems use proportioning valves and metering valves. Tech B says that hydraulic braking syst
    8·1 answer
  • How many ohms of resistance must be present in a circuit that has 120 volts and a current of 10 amps
    15·2 answers
  • Why might compound gear trains be better than two gears alone?
    6·1 answer
  • Can a measurement be exact
    8·1 answer
  • Energy can transform between different types. For each of the following examples, identify two energy transformations and the ty
    13·1 answer
  • The mechanical advantage of a lever is 4 . what does it mean?​
    14·2 answers
  • Calculate the current flowing if a charge of 36 kilocoulombs flows in 1 hour.
    11·1 answer
  • A tourist stands at the top of the Grand Canyon, holding a rock, overlooking the valley
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!