You can make an electromagnet stronger by doing these things:

1. wrapping the coil around a piece of iron (such as an iron nail)
2. adding more turns to the coil.
3. increasing the current flowing through the coil.

It is a fixed number that doesn’t change after magnetization. On the other hand, electromagnets see their strength fluctuate depending on the amount of current supplied. The same electromagnet can provide multiple magnetic strengths.

Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. As the current flowing around the core increases, the number of aligned atoms increases and the stronger the magnetic field becomes. At least, up to a point.

They are:

• Attractive Property – Magnet attracts ferromagnetic materials like iron, cobalt, and nickel.
• Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other.
• Directive Property – A freely suspended magnet always points in a north-south direction.

Permanent magnets are made using ferromagnetic materials like iron, cobalt, nickel etc. Alloys of rare earth metals are also used to make permanent magnets.

Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include the elements iron, nickel and cobalt and their alloys, some alloys of rare-earth metals, and some naturally occurring minerals such as lodestone.

A permanent magnet is one that retains its magnetic properties for a long period of time. Examples are iron, nickel, cobalt and some rare earth alloys etc. Temporary magnets are those that simply act like permanent magnets when they are within a strong magnetic field.

Characteristics, properties & types of magnets….

What is the difference between a permanent and a temporary position? A permanent position is one where there is no defined employment end date and the employee receives a benefits package. A temporary position is one that has a defined duration of employment with a contract end date.

Five common permanent differences are penalties and fines, meals and entertainment, life insurance proceeds, interest on municipal bonds, and the special dividends received deduction. Penalties and fines. These expenses occur when a business breaks civil, criminal, or statutory law (and gets caught!).

Examples of permanent changes are:if a tree is grown it can’t change back into a baby plant. Temporary change Temporary change is a change is for a limited time. Permanent , Temporary , Chemical & Physical Changes Examples of temporary change are : wet sand can change into dry sand.

A full-time employee: usually works, on average, 38 hours each week (see hours of work) can be a permanent employee or on a fixed-term contract. is usually entitled to written notice, or payment instead of notice, if their employer terminates their employment.

In a permanent and regular job an employee gets a regular salary every month. Besides, a regular salary he gets other benefits such as savings for old age, holidays, medical facilities for his family, etc. They are also expected to work very long hours. They don’t get other benefits like permanent employees.

Short answer: Full-time employment is usually considered between 30-40 hours a week, while part-time employment is usually less than 30 hours a week.

40 hours

Most employers determine full-time status based on business needs and typically consider an employee to be full-time if they work anywhere from 32 to 40 or more hours per week.

Young people can start full-time employment as soon as they leave school, which is on the last Friday in June of the year that they turn 16 years old. If a young person starts a full time job at 16 they will still need to complete at least 280 guided learning hours a year in education or training.