Explanatory Explanations of the Magnetic Field .

2. HAND OUT

3. THE MAGNETIC FIELD
 What is magnetic field .
 how to get magnetic field .
 Applications.
 Factors on which the magnetic field depends.
 Explanation of magnetic field theory.
 Explain the magnetic field in practical

4.  A magnetic field is the magnetic effect of electric currents
and magnetic materials.
the magnetic field at any given point is specified by both a
direction and a magnitude (or strength) .
WHAT IS MAGNETIC FIELD ?

5.  By passing an electric current through a wire where magnetic
circuits are formed around the wire.
HOW TO GET MAGNETIC FIELD ?

6.  Generator
 Motor
 Contactor
 Relay
 Transformer
APPLICATIONS

7.  https://www.youtube.com/watch?v=dMxd8ELuQNk
WATCH A VIDEO

8.  the current
 Place the point on the wire
 Type of material
FACTORS ON WHICH THE MAGNETIC
FIELD DEPENDS:

9. EXPLANATION OF MAGNETIC FIELD
THEORY

10. A magnetic pole face has a rectangular section having
dimensions 200mm by 100mm . If the total flux density is
7.5mT, calculate the magnetic flux .
1EXAMPLE

11.  A magnetic pole face has a rectangular section having
dimensions 300mm by 200mm . If the total flux density is
8.5mT, calculate the magnetic flux .
EXAMPLE 2

12.  A magnetic pole face has a rectangular section having
dimensions 200mm by 100mm . If the total flux emerging
from the pole is 150×10-6Wb , calculate the flux density .
EXAMPLE 3

13.  What we need .
1- magnet.
2- Iron powder.
3- Plastic.
EXPLAIN THE MAGNETIC FIELD IN
PRACTICAL

14. QUIZIZZ

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