In what respect does a wire carrying current differ from a wire carrying no current?
In what respect does a wire carrying current differ from a wire carrying no current?
Answer: A current carrying wire produces a magnetic field. When current is flowing through a wire, the electrons move inside it along a definite direction. On the other hand, if no current is flowing through a wire, the electrons inside this wire are in random moiton, their average thermal velocity is zero.
When a current carrying conductor is placed in a magnetic field a potential difference is generated in a direction perpendicular to both the current and the magnetic field?
Facts About the Force
| 1. | If free to rotate, permanent magnets point approximately north-south. |
|---|---|
| 2. | Like poles repel, unlike poles attract. |
| 3. | Permanent magnets attract some things (like iron and steel) but not others (like wood or glass). |
Why there is no electric field around a current carrying wire?
There is no E field outside the conductor due to electrons because the conductor is not charged–this means there exist an equal number of protons to every electron in the conductor. If the conductor was charged, then there would be E field outside the conductor due to that charge.
In which direction would the electric current in the wire point if the wire were pulled to the right?
Correct answer: Current flows counterclockwise in this circuit. Using the right hand rule for the conventional current in the wire, the right thumb is pointed along the wire pointing to the left at the top of the circuit.
How can you justify that a current carrying wire produces a magnetic field?
Like stationary charges produce an electric field proportional to the magnitude of charge, moving charges produce magnetic fields proportional to the current. In other words, a current carrying conductor produces a magnetic field around it.
How can it be shown that an electric current in a wire produces a magnetic field around it?
Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire. Magnetic Field Generated by Current: (a) Compasses placed near a long straight current-carrying wire indicate that field lines form circular loops centered on the wire.
Why and when does a current carrying conductor?
A current carrying conductor produces a magnetic field around it which interacts with the magnetic field in which it is held. Thus, it experiences a force. Direction of this force depends upon the direction of current and the magnetic field.
What is the field around a current carrying conductor?
When a current flows in a wire, it creates a circular magnetic field around the wire. This magnetic field can deflect the needle of a magnetic compass. The strength of the magnetic field is greater closer to the wire, and increases if the current increases.