Unit 3 - Magnetism A) Magnetism is a ___________that exists between _____________________ ______________________always create _____________
· Natural Magnetism comes from - spinning _______________ in atoms · Electric current - Where there is ______________there is always_________________
B) Magnetic Fields - regions in ______________ where a magnetic _____________ may be detected
We will focus on fields around: 1) current carrying ___________ 2) permanent and ___________________________
Example 1) Magnetic _____________around a Bar Magnet - (Note: Actual Magnetic Fields contain many more lines of magnetism)
1. Magnetic flux lines - _________________________________in a magnetic field.
A magnetic field is not _______________________.
Between each line of magnetism their exist __________________
a) The ______________of a ________________line up perfectly with the flux lines
b) The _________________on a flux line show where the _________________Pole of a compass would point in that field.
REMEMBER THIS: Flux arrows point _____________________________________and back over again to North
c) Magnetic force strongest at the _______________where flux lines are ________
d) Measuring the strength of a magnetic field QUESTION: How do you measure the strength of a magnetic field? ANSWER: Put a ____________ with a known current into the field and measure the ____________ __________________ on the _______________
|