APPLICATION OF ELECTROMAGNETIC FIELD AND TRANSMISSION SYSTEM
CONTENT
- Electromagnetic Field
- Galvanometer
- Conversion of Galvanometer to Ammeter
- Conversion of Galvanometer to Voltmeter
- Transformer
- Types of Inductance
- Electric Motor
- How to Make a Simple Electric Motor
- Generator
Electromagnetic Field
The electromagnetic field is a combination of the electric field and the magnetic field. The electric field component is produced by the voltage on a current carrying conductor while the magnetic field is produced by the flow of electric current. The two fields permeate all the space around a current-carrying conductor.
Galvanometer
When current flows through a current carrying conductor placed in a magnetic field, it experiences a force. This principle is applied in the design of galvanometer. The force is:
- directly proportional to the current flowing in the conductor
- directly proportional to the magnetic field strength of the magnetic
- directly proportional to the length of the conductor
The magnitude of the force is given as
\(F = BIL sin \theta\) ——– (1)
Where;
B- is the strength of the magnetic field of the magnet
I -is the current flowing in the conductor
L -is the length of the conductor
ϴ- is the angle the conductor makes with the direction of the magnetic field
A moving coil galvanometer is an instrument used for detection of very small current.
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