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What else can I help you with?
Why do you use air-core in a transformer?
Higher frequencies the core can concentrate the magnetic lines of force it takes time to magnetize and demagnetize iron at about 10,000 hz we use powdered iron in some sort of glue (ferrite) at somewhere around 1Mhz any magnetic material will no longer concentrate those magnetic flux lines it will only get hot so the core must be non magnetic (air is free) open air conductors radiate heat all three ways: conduction convection radiation
What happens if the eletronmagnet if the circuit is broken?
If the circuit of an electromagnet is broken, the flow of electric current ceases, which results in the loss of the magnetic field generated by the electromagnet. Without the current, the electromagnet no longer exerts a magnetic force, causing any objects it was holding or affecting to be released. This interruption can occur due to a switch being turned off, a wire being disconnected, or a component failing.
Which is better a 6 cell battery or a 9 cell battery?
"Better" doesn't really say enough in this situation. I'm assuming this is about a laptop that can be fitted with either a 6-cell or a 9-cell battery - in which case the 9-cell will let you run longer on battery, but will usually stick out a bit and make the laptop both bigger and heavier. So 9-cell is good for runtime, but poor for carrying it around. Your choice.
The magnitude of the voltage induced in a conductor moving through a stationary magnet field depends on the?
The speed of the conductor through the magnetic field, which translates into the number of magnetic lines of force the conductor can cut per unit time, will determine the magnitude of the voltage induced in the conductor. As an additional factor, if a longer piece of wire can be moved through the magnetic field, it will induce more voltage as well. The more speed we can put on the conductor, and the more of the conductor we can move through the magnetic field, the more voltage we can induce in the conductor.
How do you make an electric motor?
Can make electric motor more powerful by: 1) Increasing the number of turns of the rotating coil. 2) using stronger magnet. 3) multiplying the number of coils and commutator segments. 4) winding the coil on a soft iron core; the soft iron core becomes magnetised and concentrates its magnetic field in the coil, this increases the forces on the coil.
What happens when something is demagnetized?
It is no longer magnetic.
What happens when water touches molceles?
The magnetic field around it makes it unmagnetic. This dosent make sense by saying unmagnetic but it unmagnetises and it will no longer be magnetic
When this is turned off the electromagnet is no longer magnetic?
Electric current.
What is saturation in magnetic materials?
Saturation in magnetic materials is the point at which the material can no longer be magnetized further, even with an increase in magnetic field strength. At saturation, all magnetic moments in the material are aligned in the direction of the magnetic field, and no additional magnetic flux can be induced.
When does the mornings get darker for longer?
Mornings start to get darker for longer as we move into fall and winter due to the earth's tilt. This change typically occurs around the time of the autumn equinox in late September and continues until the winter solstice in late December.
If an earthquake is long does it do more damage?
Yes. The longer an earthquake continues, the more foundations of structures such as buildings and bridges continues to be shaken and therefore destabilised.
What happens when current reaches saturation?
When current reaches saturation in a device like a transistor, it means the device can no longer increase the output current even if the input continues to increase. This generally indicates that the device has reached its maximum current-carrying capacity and can lead to distortion in the output signal.
Why is an electromagnet not a permanet magnet?
because the copper wire in it is only magnetic when there is electricity running through it so when you turn of the electricity soure it is no longer magnetic
What happens with the energy associated to the magnetic field of a coil with electric current if the electric current is turned off?
The magnetic field or energy associated with the magnetic field will no longer be generated if the current is turned off.
If you press and release the fuel petal the engine continues to rev for a split second longer?
Yes, it does!
What will happen to the electromagnet if the current stops?
If the current stops flowing through an electromagnet, the magnetic field that was being generated will also disappear. This will cause the electromagnet to lose its magnetic properties and no longer attract or repel magnetic materials.
What does de-magnetised mean?
De-magnetized refers to the process of removing the magnetic properties of an object, making it no longer magnetic. This can happen due to exposure to high temperatures, strong magnetic fields in the opposite direction, or physical impacts that disrupt the alignment of the magnetic domains within the material.
