A horizontal wire that runs east-west carries a steady current to the east. A C-shaped magnet is placed so that the wire runs between the poles, with the north pole above the wire and the south pole below. What direction of the magnetic force on the wire between the poles?
WEST TO EAST
Mr Gupta: There is enough error in the world without you adding to it. Please stop.
The force will be perpendicular to both the current flow, and the magnetic field. This is into the the diagram, or out of the diagram. Go look up the right hand rule for force, and you will have it.
The direction of the magnetic force on the wire between the poles can be determined using the right-hand rule.
1. First, extend your right hand so that your thumb, index finger, and middle finger are all perpendicular to each other and in three different directions.
2. Point your thumb in the direction of the current in the wire, which is to the east.
3. Curl your fingers in the direction of the magnetic field created by the magnet, which is from the north pole to the south pole.
4. The direction in which your fingers naturally curl is the direction of the magnetic force.
5. In this case, since the wire carries a current to the east and the magnetic field is from north to south, the resulting force on the wire would be upward, perpendicular to both the current and magnetic field.
Therefore, the direction of the magnetic force on the wire between the poles is upward.
To determine the direction of the magnetic force on the wire between the poles of the magnet, we can follow the right-hand rule for current-carrying conductors.
1. First, extend your right hand and align your thumb, index finger, and middle finger perpendicular to each other, with your thumb pointing in the direction of the current.
2. In this case, the current is flowing from west to east in the wire. So, if you point your right thumb towards the east, your fingers should naturally curl in the direction of the magnetic field lines.
3. Next, consider the orientation of the magnetic field created by the magnet. The north pole is above the wire, while the south pole is below.
4. Magnetic field lines flow from the north pole to the south pole. Therefore, with your fingers curling in the direction of the magnetic field, they should point downwards between the north and south poles.
5. Finally, by the right-hand rule, the direction of the force on the wire is given by the direction your palm faces. If you hold your palm facing downwards, you'll notice that it faces towards the south.
Thus, the direction of the magnetic force on the wire between the poles is to the south.