Yes, if you place your thumb in the flow direction, the magnetic direction around the wire will be ccw.
It will be a solenoid whereas if there is a wire 'going into the page' or 'out of the page', it ill be concentric circles.
That would depend if the conductor were carrying an AC current or a DC current.
the magnetic field gets stronger with increasing distance from the wire
A cylinder centered on the conductor.
A looped wire would have a stronger magnetic field because a looped wire is closer to the magnet all the way aroud.
Electric currents and magnetic fields are by nature and by definition related to each other. In general, a magnetic field is created by the rotation of charge. If you imagine an electron following a circular path, a magnetic field would be created in the direction perpendicular to the plane of the circle.On the other hand, electric current is defined as the flow of charge. So, an electron flowing along a wire results in current flow. This also means that the electron following a circular path (as above) creates an electric current along that same path.If a circular flow of current results in a magnetic field perpendicular to the circle, what happens for current flow along a straight wire? Basically, we see a magnetic field which bends around the wire. Imagine exactly the reverse as before, with the magnetic field circling around the direction of current flow.This basic relationship between electric current and magnetic fields results in some interesting interactions:1. Many electromagnets work by the following principle: A coil of wire is made so that when voltage is applied the current will follow a circular path. As discussed above this circular movement of charge results in a magnetic field. In this case, you can imagine the direction of the magnetic field as the line through the center of the wire coil.2. The Hall Effect: When current is applied across a conductive slab and a magnetic field is applied perpendicular to current flow, a voltage is generated in the third perpendicular direction. This occurs due to the interaction of the magnetic field generated by the flow of current and the applied magnetic field.
a generator or alternator,if the magnetic is permanent the current produced from the coil will be alternating current ac.
An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current ceases. Take a look at this Wikipedia page for more information: http://en.wikipedia.org/wiki/Electromagnet
A. An aluminum wire carrying current B. An electromagnet C. An iron horseshoeA. A copper wire carrying current B. An iron horseshoe D. A steel paper clip
the magnetic field gets stronger with increasing distance from the wire
circular
A clockwise direction
Yes. It depends on its resistivity
The cause is the current.
When the current is reverted, the magnetic field will also be reverted.
The force experienced by a current carrying conductor placed in a magnetic field is strongest when that conductor is placed perpendicularly to the magnetic field.
The force on current carrying conductor kept in a magnetic field is given by the expression F = B I L sin@ So the force becomes zero when the current carrying conductor is kept parallel to the magnetic field direction and becomes maximum when the current direction is normal to the magnetic field direction. Ok now why does a force exist on the current carrying conductor? As current flows through a conductor magnetic lines are formed aroung the conductor. This magnetic field gets interaction with the external field and so a force comes into the scene.
a magnetic field
yes
No, a copper wire that is not carrying a current will not be attracted to a magnet. Copper is not a magnetic material, so it does not interact with magnetic fields in the same way that magnetic materials like iron or nickel do.
The polarity of the electromagnet reverses.