topic 7 (mostly amber stuff) Flashcards
1
Q
what is produced when current flows through a conducting wire
A
a magnetic field is produced around the wire
2
Q
what determines the strength of magnetic field
A
magnitude of the current flowing through the wire
distance from wire
3
Q
what is a solenoid
A
a coil of wire which when current passes through it creates a strong magnetic field
4
Q
describe the magnetic field found inside a solenoid
A
strong and uniform
5
Q
what is a electromagnet
A
a solenoid with an added iron core
adding the iron core increases the strength of the magnetic field
6
Q
what rule can be used to determine the force experienced due to the motor effect
A
flemmings left hand rule
7
Q
what factors affect the size of the force on a current carrying wire in a magnetic field
A
magnitude of current
strength of magnetic field
