Q:2 long striaght wires (20m each) ,each having a 1.0A current going up.The distance between the two wires is 1.0m(a) what is the magnetic field (magnitude and direction) at a point o.50m left of the wire 1?(b)what is the magnetic field (magnitude and direction) at a point 0.6m right of Wire 1?

Assuming Wire 2 is to the right of Wire 1: a) Bwire1 = (u*I)/(2*pi*r) = ((4*pi*10^-7)*1A)/(2*pi*0.5) = 0.000004 Bwire2 = 0.000000424 Btotal = 0.000004424 (away from wire 1) b) Bwire1 = 0.000003333 Bwire2 = 0.000005 Btotal = -0.0000017 (toward Wire 1)

Q:Which are more secure, wired or wireless networks? Explain.

Wired networks are always more secure because they're not advertising themselves to the world; e.g. you need to have physical access to connect to a wired network. Wireless networks can be secure; but the fact of the matter is they're advertised to any passer-by and are susceptible to having their keys cracked.

Q:Hello! I'm going to re-wire my speakers and eventually get an amp to power them. For normal quot;door speakerswhat wire size would you recomend to run to them from an amp? Also, is 3ft far enough away to run my speaker wires from the amp power wire? Thanks in advance!

I would use 16 gauge. you can go a little bigger, or smaller. The biggest issue you will have ( vehicle depending ) is getting that wire thru your accordion boot and molex ( the rubber thingy that protects your wires, shaped like an S, and goes from the chassis to the door) <~ that's not talking down to you, but if other people read this, they will know exactly what it means also :D Unless your running a ton of power to your doors, you really don't need thick wires. As to the other part, It's not the speaker wire you need to keep away from your power wire, it's your RCA cables.. The rule is power wire goes down the battery side of the vehicle, and the rca's and remote turn on, go down the opposite side, if possible. That way you don't get alternator whine( when you accelerate, a high pitched whine will play thru your system, and make you Bat-S#it crazy :) Good Luck!

Q:The output part of wire plastic and part of wire broken, and the connection lost sometimes, some taps used to wrap up but the connection is still not good.How to fix it permanently?

Only try to fix it if it is on the lptop side, DON't play with A/C power unless you're qualified. If it is on the safe voltage side you could cut the wire, strip back the wires about 1cm, and twist them together, then solder the wires. Before you join them slide a small piece of heatshrink over one side of it, then after joining and soldering the wires wrap a small amount of electrical tape around the bare wires then slide the heatshrink over it all and heat it up to enclose it all, Fixed ! If you need help with it let me know. Cheers,

Q:How do I wire with reg 5 wire T-Stat Installing a 2 ton Goodman A/C cond unit to a old Carrier Heat pump AHU with emergency heat strip.

depends on the t stat look at the back for a better idea the wires should be collor coaded 2 for the heat and 2 more for the ac and maby 1 for a ground

Q:I have a 2 wire system in my garage and need to update to a 3 wire grounded plug. Can I leave my existed 2 conductor and just run a single 12 gauge insulated ground in the same conduit back to the panel/grounding rod. Or do I need to pull out the 2 wore replace with 3 wire ?

It will could be tough to pull if there are existing wires in there. You may need to tie a line to what you remove, then lube a new set of wires, and pull the new line and wire back through.

Q:If not, then, in experiments, why must a wire always be straight?

Bending might increase the resistance very slightly by damaging the crystal structure, but the effect would be tiny. The only reason to want straight wires is neatness!

Q:The question is can i complete a ac circuit if i connect a live from one wire to a neutral from another.

It will conduct, it may also overload and melt the insulation on the wire without tripping a breaker. The purpose of a breaker is safety, one aspect is if a wire isn't large enough to carry the current applied it gets hot. If you have 15 amps from two breakers (on the same leg) the current on the neutral could be double the amount the wire is safe to carry, but the breakers won't sense a problem and may melt the insulation on the wire carrying 30 amps. There are a few instance that a neutral can legally be shared by multiple circuits, many restrictions apply, and conductors from separate romex cables do not satisfy any legal circumstance I can think of.

Q:I'm doin this thing where I need to connect some wires and one part uses Apple iPod headphones. Inside those wires, they have insulation. I burnt the wires so the insulation would not be in the way. Will the wires still conduct the electricity? Or will I just need to find some other headphones without insulation to do this with?

The undertaking of the conductors interior the cable won't regulate, however the insulation would burn and allow the conductors to the touch, making a short circuit. this could circumvent the I Pod working and would harm the output amplifier.

Q:I'm just wondering would i be able to connect a split 8 gauge wire with wire nuts like i'll explain:Use two wire nuts instead of one and divide the copper wire on both ends and wire nut both sides together with 2 nuts. The whole apparatus would look kinda like this:----lt;gt;---- with the wire nuts connecting the two arrow thingsThanks anyone

Even though you had been wise to make use of the noalox, or antioxidant, i might ratehr endorse that you get the suitable gauge of wire in copper and rewire the entire circuit. The intent that I say that's that your oven is a excessive resistance circuit and aluminum does no longer like high resistance. With excessive resistance on aluminum, the aluminum wire will start running or moving under the strain and can eventually burn out the connection. In the event you have got to leave it aluminum, don't use a wire nut, but get a split nut from an electrical provide, use teh same goop on it, then get two wrenches for the best way that you just ought to screw the break up bolt to the nut, tighten the item down as tight as humanly viable, the wrap it with a specified tape that the electrical give may also have. It's not the commonplace electrical tape, but a stretchable tape and also you wrap it tight at the least 3 or a bit of extra inches on all sides of the nut. This may insulate the connection in order that it are not able to be shorted out in any respect. Mine had the same aluminum connection and when I changed the stove, which was difficult wired to the stove, I simply replaced the entire wire. Mainly the field is just not too some distance away fromthe stove due to the fact it wants to be as just about it to decrease resistance. To scan what you have got performed, that you would be able to take a low-cost volt meter from Radio shack, set it on the correct settings for measuring voltage on 220, and if the needle goes to 220 + or - a bit, you're nice in the meanwhile.