Electromagnestism

Solenoid

100

What is the unit used to measure the electric current?

Amperes (A)

200

What materials do you need to make a solenoid?

Energy source and wire coil.

300

What is a solenoid?

1. 
   

   a cylindrical coil of wire acting as a magnet when carrying electric current.

   
   

400

The magnetic field around a solenoid is stronger when they are more coils around the wire. True or False.

True.

500

What type of magnetic field is created inside a solenoid?

Strong magnetic field.

Electromagnet

100

What is the name of the invisible field around a magnet where a magnetic force can be felt?

Magnetic field

200

What happens to a magnteic field when the electric current in a wire increases?

The magnetic field becomes stronger

300

What shape is the magnetic field when the electric current in a wire increases?

Circular

400

Turning off the electric current in an electromagnet makes it lose its magnetism. True or False.

True.

500

What metal is used in a core of electromagnet?

Iron.

Materials

100

What type of material allows electric current flows easily?

Copper

200

What are the magnetic main materials?

Iron, cobalt and nickel.

300

What type of materials electromagnets can attract?

Ferromagnetic metals (pins, clips, and other items made of iron or steel) 

400

What type of material does not allow electric current to flow?

Plastic

500

Whic material is used as a core of an elctromagnet to make it stronger?

Soft iron

Right hand rule

100

What does the thumb points at the right hand rule?

Direction of current flow

200

What does the 1st right hand rule helps you determine?

Direction of the magnetic field and the flow of the current.

300

You should use your left hand for the right hand rule. True or False.

False.

400

What are the steps of the right hand rule?

1. Extend your right hand: Make sure your thumb, index finger, and middle finger are all extended, and at right angles to each other. 

   
   

   
   

   
   

2. First vector (A): Point your thumb in the direction of the first vector. 

   
   

   
   

   
   

3. Second vector (B): Point your index finger in the direction of the second vector. 

   
   

   
   

   
   

4. Resultant vector (C): Your middle finger will point in the direction of the cross product (A x B). 

500

What happens to the strength of the magnetic field if you increase the current in the wire?

The magnetic field becomes stronger.

Concepts

100

What is electromagnetism?

Electromagnetism is the branch of physics that studies the relationship between electricity and magnetism

200

What are the main uses of electromagnets?

Motors and generators

300

Who was Hans Oersted?

 Danish physicist, Hans Christian Oersted, discovered that there was a relationship between electricity and magnetism.

400

Define: Magnetism.

Magnetism is the force exerted by magnets when they attract or repel each other.

500

Define: Electricity.

Electricity is a type of energy that consists of the movement of electrons between two points when there is a potential difference between them.