Electromagnetic Induction Flashcards
(10 cards)
The instruments for measuring electrical current, used on electrical circuits to know and measure the intensity and direction of electrical current.
Galvanometer
What does a galvanometer measure?
Electrical current in circuits
What happens to the galvanometer needle when a magnet is moved near the coil?
The needle deflects
What happens to the galvanometer needle when the magnet is taken away?
The needle returns to zero
What happens to the Galvanometer needle when a magnet is held stable near the coil?
The galvanometer needle remains stable
This law states that moving a magnet through a coil creates an electric current.
This is called electromagnetic induction.
Faraday’s law
Who discovered Faraday’s Law and when?
Michael Faraday in 1831
How does a faster moving magnet affect induced voltage?
Factors affecting Induced Voltage
It generates higher voltage
How does the number of coil turns affect induced current?
Factors affecting Induced Voltage
More coils mean a stronger induced current
How does magnet strength affect induced voltage?
Factors affecting Induced Voltage
A stronger magnet increases the induced voltage
