What is the relation between magnetic field and current and distance?
The magnetic field at point P due to the element dl is found to be proportional to the current in the wire, and the length of dl and is inversely proportional to the square of the distance R .
How the strength of the magnetic field due to current carrying conductor is depends upon?
Thus magnetic field due to current carrying conductor depends on the current flowing through conductor and distance from the conductor.
On what factors does the magnetic field produced by straight current carrying conductor depends?
Magnetic field due to a current-carrying conductor depends on the current in the conductor and distance of the point from the conductor. The direction of the magnetic field is perpendicular to the wire.
What does the strength of the magnetic field depend upon?
The strength of the magnetic field depends on the current I in the wire and r, the distance from the wire. If one remembers the case of the electric field of a uniformly charged wire, it also fell as 1/r.
What is meant by magnetic field on what factors does its strength depends?
A magnetic field is a force field that is created by moving electric charges and magnetic dipoles, and exerts a force on other nearby moving charges and magnetic dipoles. it’s depends on 1. strength of the magnet and inversely proportional to the distance. mitgliedd1 and 67 more users found this answer helpful. Thanks …
Why are electromagnets are called temporary magnet?
While iron can be made into a permanent magnet, the iron core of an electromagnet is not a magnet. All of the materials an electromagnet is made of are nonmagnetic. This is the reason that electromagnets are temporary magnets. Thus, electromagnet is called a temporary magnet.
Why are electromagnets useful?
Electromagnets are useful because you can turn the magnet on and off by completing or interrupting the circuit, respectively. The doorbell is a good example of how electromagnets can be used in applications where permanent magnets just wouldn’t make any sense.
What are 3 advantages of electromagnets?
Although an electromagnet is more complicated than a permanent magnet, it has useful and important advantages.
- Control of Magnet Strength. One of the most important features of an electromagnet is the ability to change its magnetic force.
- Greater Magnet Power.
- Electromagnet Uses.
- Permanent Magnet Uses.
What are disadvantages of electromagnets?
Electromagnetic power sources may not be as useful, or can perhaps be dangerous to use, under certain circumstances. For instance, if you need to have a power source that must have a regulated current output, both AC and DC power generators would need to be run at a non-varying speed.
What advantages and disadvantages do electromagnets have?
The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.
What are advantages and disadvantages of Faraday flashlight?
This, along with the long-life LED lamp which does not burn out like an incandescent bulb, can give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is that the supercapacitor cannot store much energy, limiting the operating time per charge.
How does a Faraday flashlight work?
The flashlight works on the principle of Faraday’s law, which says that a changing magnetic field induces an electromotive force, producing a current in a wire. In our case, the magnet is moving (when you shake the flashlight), which causes a changing magnetic field.
What are the disadvantages of electromagnetic radiation to humans?
The higher the frequency of the radiation, the more damage it is likely to cause to the body: infrared radiation is felt as heat and causes skin to burn….The three main types of ultraviolet radiation and some of their effects.
| Type | Frequency | Hazard |
|---|---|---|
| UVC | High | Causes severe damage to cells |