Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire. One way to explore the direction of a magnetic field is with a compass, as shown by a long straight current-carrying wire in. Hall probes can determine the magnitude of the field.
How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire decreases?
When a magnetic compass is placed near the current carrying wire, it shows deflection. … This shows that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases.
How can you show that the magnetic field produced by a given electric current in the straight wire changes as the distance from the wire increases?
So,when we put magnetic compass near the wire it will show greater deflection than when we put magnetic compass farther from the current carrying wire.So,by using magnetic compass we can easily show that magnetic field is decreased when length of wire increases.
How is the strength of the magnetic field?
The intensity of a magnetic field, measured in Gauss or Teslas (10,000 Gauss = 1 Tesla), is also a common measurement of a magnets strength as this is a representation of the density of a magnetic field produced by a magnet, known as flux density.
How is the strength of the magnetic field at a point near a wire?
How is the strength of the magnetic field of a point near a wire related to the strength of the electric current flowing in the wire? Strength of the magnetic field is directly proportional to the current passing through the wire.
How magnetic field is created?
If you have a rotating electric current, it will create a magnetic field. On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.
What are the two methods of producing magnetic field?
Some of the methods of producing magnetic field are using permanent magnets, electromagnets and current carrying conductors.
How does magnetic field depends on current?
The magnitude of magnetic field at a point due to a straight current carrying wire depends upon: The current passing through the wire – directly proportional, greater the current in wire , stronger will be the magnetic field produced.
What is the symbol of magnetic field?
Index to magnetic terms & units in the SI
|Quantity name||Quantity symbol||Quantity symbol|
|magnetic field strength||H||Φ|
|magnetic flux density||B||χρ|
How do you calculate the strength of a magnetic field?
The definition of H is H = B/μ − M, where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization.
What units is magnetic field strength?
Usually, magnetic field strength is defined by the unit of Oe・A/m ( Oersted・Ampere/meter ). And when it is defined by flux density, the units of G (Gauss) or T (Tesla) are used.