6.4

Question 1

permanent magnets

Answer 1

has a magnetic field

Question 2

electromagnetism

Answer 2

a circular magnetic force around a wire, when a current moves along it

Question 3

solenoid

Answer 3

a coil of wire with electricity flowing through it

Question 4

electromagnet

Answer 4

when an iron rod is placed in the center of the coil, making magnetic field become stronger

Question 5

electric motors

Answer 5

converts electrical energy to kinetic energy (made by placing a solenoid on a swivel between a permanent magnet)

Question 6

generators

Answer 6

uses kinetic energy to produce electrical energy (made by manually spinning a magnet or solenoid)

Question 7

dynamos

Answer 7

small magnets are spun around the solenoid, often used to power lights of bicycles

Question 8

transformers

Answer 8

increases or decreases voltage levels

Question 9

Permanent vs Electromagnet

Answer 9

1) E- can be turned on and off, strength can be altered by changing current
P- is always on, cannot adjust strength