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A compass is placed on top of current-carrying wirC , aS shown- Which figure shows the correct alignment of the compass?...

Question

A compass is placed on top of current-carrying wirC , aS shown- Which figure shows the correct alignment of the compass?

A compass is placed on top of current-carrying wirC , aS shown- Which figure shows the correct alignment of the compass?



Answers

A compass is placed directly on top of a wire (needle not shown). The current in the wire flows to the right. Which way does the north not shown). The current in the wire flows to the right. Which way does the north. (FIGURE CANNOT COPY)

I have a pretty simple under their supervision comes into picture that Villager Compass New like this one and this area director in inside the North Pole. And there's current carrying little fits. The current is our outward. The plane are out off the screen in the city centre, my dog So we have way have to gerrymander the direction of motion off the this comm passengers. So we know by their own tumbles that when this is outside the plane So people align our Tom inside the Jackson off the current current. So the direction of the our call will give the direction of penalty feel. So basically, at this point, the charity filled will it be dormant, Jackson. So this imply started. The comparisons will always align with the direction of Manitou feel so just move. Don word are leather in the clockwise direction So we can say that it's my knittig magnetic field Afar food at the North Pole. Off compounds each don't word that ex son so compass will off the clock wage. That is that

So we know that the magnetic field line due to current flowing from the south to the north is a long concentric vertical lines downwards downwards meaning into the paper and down a eastward points and then up birds which essentially out of the paper at westward points. This is all clockwise clockwise with respect to an observer facing north end. So, given this, we have that first at any point below the current wire, the needle is going to experience to magnetic fields. So we have I write this little lower. My apologies. Here we have the northern direction and we have the Western direction. We have a vector here. Be sub e. This would be the magnetic field beats of see the magnetic field due to the current carrying wire and then going up would be beasts of e. This would be the magnetic field due to the earth. We have then a resultant magnetic field and we can actually let's drug dash lines. So better represent this. This would essentially be our vector, our results, inspector. And so we can say that Then an angle Seita would be we can say tangent of data would be given by be subsea over beasts of E and Seita would equal are 10 of be subsea over be sub e. So we can say that the compass needle placed essentially, um, at a point below the current wire. We could say that then will be in a direction. Seita, Of course, this would be west of North, where Fayed as equaling, are 10 of the magnitude of the current carrying wire divided by the magnetic field of the Earth. We then have a needle above the current wire, and here we have the eastern direction than the northern direction. Going straight up would be the magnetic field of the earth once again and then to the right, we have the magnetic field, Um, due to the current carrying wire and again we have our resultant magnetic field. And essentially we can say that here is again Seita and fate and this case would be again are tan over. This would be the magnitude of the current carrying wire divided by the magnitude of the earth. And so again, um, compass needle placed above the wire. Well, be in a direction, Fada. And again, this would be east. Now let's just separate this, we'll be in a direction east of north. That would be your answer for the second part. That is the end of the solution. Thank you. For what?

In this question were told that there is a compass on top of the wire. The current in the wire flows towards the right, as can be seen in this diagram. We have the compass and blue with north east, south and west labeled, and the wire with the current going to the right. We want to determine what way the north end of the needle would point. So what we can use the right hand rule, putting our thumb in the direction of the current. We can see that the current in the compass is directed downwards. The magnetic light at the south poles will go down into the south pole and emerged back out of the north pole. The magnets will align with the north pole pointing in the direction of the magnetic field, which is externally applied. So what we can judge is and say is that the north end of the needle will point downwards so towards the south part of the compass.

It's important. Interesting question comes into the picture. Basically, there is, ah, current carrying wire, which along obviously, and we don't know the direction of parents. So basically we have to return by the action of current and ah, the content is given that there's a comparison. Is North Pole. This is desire indicated, than they're letting. This is the partners, and Poland is the campus. It's moving in. That direction is initially the then current research on. So basically, this is, ah, direction along the anti clockwise. So basically, we have a fair amount of excellence current. So for that, when a current is falling a wire, the bumpy field is created around it. The maximum penalty field in the given. While so basically the election off the manatee field at this point should be love would become vice that because, ah, in that dress, under direct sun compass is moving. So that a disappoint that the accents would be in a bar that Exxon. So then three. This implies start. Currin should be in downward. Erickson. Why is that? I don't were not inside the plane or inside this advice that because the right hand release saying that when we call our finger inside the in the direction or for the magnetic field. Obviously our time will give the direction of current. So we're determining by this law, the current will be inside the loop or inside their skin. OK, that did that.


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