Question

i need help with electricity concepts. Can someone plz help go over them with me????

Answer 1

maybe ill see wut i can do

Answer 2

thx!

Answer 3

mhmm no prob

Answer 4

so can u explain what a grounding is? i read my book definition and also asked my teacher but i still have problems with it.

Answer 5

thats a contact point that allows for the flow of currents from a charged object to a neutral material, called ground, usually Earth, hence the name grounding

Answer 6

so whats the point of grounding an object?

Answer 7

well, it prevents the buildup of static eltricity, providing a way for those extra charges to exit the charged object

Answer 8

"The primary purpose of grounding is to reduce the risk of serious electric shock from current leaking into uninsulated metal parts of an appliance, power tool, or other electrical device."

Answer 9

oh i see. thx. ok so how about newton's laws? i always mix them up. can u plz review them.

Answer 10

the 1st, 2nd, and 3rd

Answer 11

oh yea those lol same here

Answer 12

first one basically states that an object tend to continue at its current speed unless another force is exerted on it

Answer 13

in easier terms, what remains unmoving will not move, and what moves will remain in motion, unless an external force is exerted on them

Answer 14

second one just writes out the relationship between force, mass, and acceleration: F = ma

Answer 15

third one states that for every force there's an equal but opposite force that counteracts the original force

Answer 16

kk got it. so for the second law, how do y

Answer 17

oops sorry, i meant how do you know if its inversy or directly proportional

Answer 18

think about it mathematically, f = ma, this follows the directly proportional formula, which is y = kx, where k is the constant. so in this case, m, or mass, remains unchanges and therefore replaces k as a constant. so u know f and a is directly proportional...as a increases, f will too, same works the other way around

Answer 19

unchanged*

Answer 20

so for inversely proportional, as a goes up, f goes down?

Answer 21

yes, but acceleration and the force is always directly proportional...

Answer 22

so would the mass go up and the force go down? im not sure i understand the inversely proportional so much.

Answer 23

if mass goes up, the force goes up, say that a = 2, and mass = 10. the equation is f = ma, so its f = 10 * 2, we then know that f = 20; if either a or the mass increases, the force will also increase. say that mass goes up to 20, the equation becomes f = 20 * 2, which means f = 40, twice that of the original value

Answer 24

inverse proportional means its y = k / x, so the larger x becomes, the smaller y will be

Answer 25

oh there are different equations for them?

Answer 26

yes, just these two thou, they're both very easy to understand mathematically

Answer 27

ok i got it. thx soo much. just one more question. when they say induced charge, what does that mean?

Answer 28

um...an induced charge occurs when an external electric source is brought near another electrical source. and we know that in the electric world, there are 2 charges, + and -, and opposite signs attract, while identical signs repel. for example, if a + charge is brought near a neutral object, the object will become - charged. this negative charge is an induced charge

Answer 29

and this only happens with neutral objects or other ones as well?

Answer 30

it applies to other ones as well yes, when its +. and another + source is brought near, the first + will become - since the second + repels the first + charge

Answer 31

wait so how come tht doesnt happen with magnets or electrical rods?

Answer 32

it does, magnets have a south and north poles right? so when u have 2 magnets, and they're arranged so that one south pole faces another south pole, they will repel each other , if one is south and the other is north, they will stick together because of the attraction between opposite charges, similar idea with rods

Answer 33

oh for these, the charges are set at each end, meaning they cannot be changed, therefore charges on a magnet cannot be changed

Answer 34

but you said that the + turns to -. ok so magnets cant have induced charges

Answer 35

basically yes, such materials are made to stay charged, so...

Answer 36

ohh ok i got it. thx for all the help! i really appreciate it:)

Answer 37

yep no problem mate, thanks for the medal!

Answer 38

ur welcome