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
Ilia_Sergeevich [38]
3 years ago
14

If the current in a wire increases from 5 A to 10 A, what happens to its magnetic field? If the distance of a charged particle f

rom a wire changes from 10 cm to 20 cm, what happens to its magnetic field? If the charge of a particle changes from 2 µC to –2µC, what happens to the force exerted on that particle?
Physics
2 answers:
dsp733 years ago
7 0

1. The magnitude of the magnetic field doubles

Explanation: the intensity of the magnetic field produced by a current-carrying wire is given by:

I=\frac{\mu_0 I}{2 \pi r}

where \mu_0 is the vacuum permeability, I is the current in the wire, r is the distance from the wire.

As we see from the formula, the intensity of the magnetic field is directly proportional to the current: if the current increases from 5 A to 10 A, it means it doubles, so the magnetic field doubles as well.

2. The magnitude of the magnetic field halves

Explanation: the intensity of the magnetic field produced by a current-carrying wire is given by:

I=\frac{\mu_0 I}{2 \pi r}

We see that the magnitude of the magnetic field is inversely proportional to the distance from the wire (r). In this case, the distance of the particle is changed from 10 cm to 20 cm, so it is doubled: therefore, the magnitude of the field will become half of the initial value.

3. The force reverses direction

Explanation: the force exerted on a charged particle in a magnetic field is:

F=qvB sin \theta

where q is the charge, v is the speed of the particle, B is the magnetic field intensity and \theta the angle between the direction of v and B. If the charge of the particle is switched from 2 µC to –2µC, the magnitude of the force does not change (because the absolute value of q does not change), however the charge q gets a negative sign (-), so the sign of the force changes and gets a negative sign too, so the force reverses direction.

Natali [406]3 years ago
4 0

Answer:

1. If the current in a wire increases from 5 A to 10 A, what happens to its magnetic field?

Answer: The field is twice as strong

2. If the distance of a charged particle from a wire changes from 10 cm to 20 cm, what happens to its magnetic field?

Answer: The field is half as strong

3. If the charge of a particle changes from 2 µC to –2µC, what happens to the force exerted on that particle?

Answer: The force is reserved

You might be interested in
If you see a swimmer in distress you should:
mestny [16]
Check-call-Care if you are training to be a life guard.
3 0
3 years ago
Read 2 more answers
A girl is floating in a freshwater lake with her head just above the water. If she weighs 610 N, what is the volume of the subme
Elden [556K]

Answer:

The volume of the submerged part of her body is 0.0622m^{3}

Explanation:

Let's define the buoyant force acting on a submerged object.

In a submerged object acts a buoyant force which can be calculated as :

B=ρ.V.g

Where ''B'' is the buoyant force

Where ''ρ'' is the density of the fluid

Where ''V'' is the submerged volume of the object

Where ''g'' is the acceleration due to gravity

Because the girl is floating we can state that the weight of the girl is equal to the buoyant force.

We can write :

W_{girl}=B (I)

Where ''W'' is weight

⇒ If we consider ρ = 1000\frac{kg}{m^{3}} (water density) and g=9.81\frac{m}{s^{2}} and replacing this values in the equation (I) ⇒

B=W_{girl}

B=610N

ρ.V.g = 610N

1000\frac{kg}{m^{3}}.V.(9.81\frac{m}{s^{2}})=610N (II)

The force unit ''N'' (Newton) is defined as

N=kg.\frac{m}{s^{2}}

Using this in the equation (II) :

(9810\frac{N}{m^{3}}).V =610N

V=\frac{610N}{9810\frac{N}{m^{3}}}

V=0.0622m^{3}

We find that the volume of the submerged part of her body is 0.0622m^{3}

8 0
3 years ago
how much energy is required to move a 4.00-microcoulomb charge through a potential difference of 36.0 volts?
musickatia [10]

Answer:

All you gotta do is search it up. ask the same question you asked on here, type it into google, it'll teach you a lot more than your actual teachers.

Explanation:

4 0
3 years ago
Which statement most accurately finishes the sentence: force always ... 1. Come in pairs
lys-0071 [83]
Comes in pairs
Just like in Newton’s 3rd law, there is always an equal and opposite force
6 0
3 years ago
Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In e
Ronch [10]

Answer:

A. velocity and time

Explanation:

A force can be define as an agent which has the capacity to change the state of an object. It can either increase the velocity of a body, change its direction of motion or cause a moving object to come to rest.

From Newton's second law of motion;

F = ma

where F is the force on the object, m is the mass of the object and a is the acceleration of the object. The unit of force is kgm/s^{2} or Newtons.

a = \frac{change in velocity}{change in time}

In the given question, apart from the mass of the object which is constant, the students should take the measurements of the velocity and time in each trial so as to calculate the required acceleration.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A 2.0-kg object is lifted vertically through 3.00 m by a 150-N force. How much work is done on the object by gravity during this
    9·2 answers
  • The temperature of an ideal gas in a sealed 0.5-m3 rigid container is reduced from 350 K to 270 K. The final pressure of the gas
    8·1 answer
  • On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3, length 88.8 cm and diameter 2.30 cm fro
    14·1 answer
  • Which statement describes a surface wave?
    5·2 answers
  • In the Millikan oil drop experiment the measured charge of any single droplet was always a whole number multiple of -1.60 x 10-1
    8·1 answer
  • What is the difference between longitude and latitude?
    12·1 answer
  • Two identical air-filled parallel-plate capacitors C1 and C2 are connected in series to a battery that has voltage V. The charge
    13·1 answer
  • In an intense battle, gunfire can so concentrated that bullets from opposite sides collide in midair. Suppose that a bullet (wit
    13·1 answer
  • 1.      A rocket is forced forward by the ______ force of its engines, expelling gases out the rear of the rocket.​
    5·1 answer
  • Refraction occurs when a wave enters a new medium at an angle because
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!