Magnetic Fields Flashcards
What is meant by the term magnetic flux linkage
The product of the amount of flux and the number of turns
What is a magnetic field
A region where a force is exerted on a magnetic material
How do you find the magnetic field around a wire
Right hand rule
What is the magnetic field shape for a solenoid
A bar magnet
What happens when current if parallel to a field lines
There is no force experienced
What is the relationship between the force and flux density
They are proportional
What is the definition of flux density
The force on one metre of wire carrying a current of 1 amp at right angles to a magnetic field
What is the unit of magnetic flux density
Tesla
How does a charged particle move in a magnetic field
In a circular path
What is a cyclotron
Two hollow semi-circular electrodes with a uniform magnetic field and an alternating pd between the electrodes
What are uses of cyclotrons
Medicine, used to produce radioactive tracers or high emery beams of radiation to use in radiotherapy
How do cyclotrons work
-electrons fired are forced into a circular oath due to the magnetic field
The applied potential difference accelerates the particle across the gap
The speed is higher therefore the radius is larger
This is repeated until it exits
