Physics, 15.10.2019 22:00 queenkimm26

The magnetic field at the center of a 0.50-cm-diameter loop is 2.9 mt . part a what is the current in the loop? express your answer in amperes. i i = nothing a submitrequest answer part b a long straight wire carries the same current you found in part a. at what distance from the wire is the magnetic field 2.9 mt ? express your answer in meters. l l = nothing m submitrequest answer provide feedback next

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Answer from: tiwaribianca475

A)I=11.35 A

B)R=0.079 cm

Explanation:

Given that

For loop:

d= 0.5 cm ,r=0.25 cm

B=2.9 mT

We know that magnetic filed in loop given as

$B=\dfrac{\mu _oI}{2 r}$ -----1

Now by putting the values

$2.9\times 10^{-3}=\dfrac{4\pi \times 10^{-7}I}{2 \times 0.25\times 10^{-2}}$

$I=\dfrac {2.9\times 10^{-3}\times {2 \times 0.25\times 10^{-2}}}{4\pi \times 10^{-7}}\ A$

I=11.35 A

Magnetic filed for wire given as

$B=\dfrac{\mu _oI}{2\pi R}$ ----2

Given that B and I is same so we can say that

Form equation 1 and 2

π R= r

$R=\dfrac{r}{\pi}$

$R=\dfrac{0.25}{\pi}$

R=0.079 cm

Answer from: Quest

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like $\frac{1}{3}$ . (i crazy)

most famous scientist who contributed to this physics are:

max planckalbert einsteinerwin schrödingermany

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

superposition (where 1 thing can be this and that at the same time),entanglement (where two particles are seemingly connected by some sort of unknown (or known) force, energy, matter (i know all that can be the same at least it was at the beginning)

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40

Answer from: Quest

they should be similar or the same

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The magnetic field at the center of a 0.50-cm-diameter loop is 2.9 mt . part a what is the current i...

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