Electricity & Magnetism Overview Flashcards
1
Q
What are the 4 fundamental forces, from strongest to weakest?
A
1) Strong
2) Electromagnetic
3) Weak
4) Gravity
2
Q
All magnets are dipoles, meaning they have what?
A
One positive and one negative charge (pole)
3
Q
Magnetic fields are aka…
A
‘B’ fields
4
Q
A magnetic field propogates outward from the NORTH/SOUTH pole and enters the NORTH/SOUTH pole.
A
North
South
5
Q
Magnetic fields are dipolar (north & south) which a creates a _______ shaped field
A
Toroidal (donut-shaped)
6
Q
The unified theory of electromagnetism was formulated by whom?
A
James Clerk Maxwell
7
Q
How many main electromagnetic interactions are there?
A
4
8
Q
The ‘h’ in the equation E=hf represents what?
A
Planck’s constant
