1. REVIEW: Magnetic Field
Review Questions
March 6, 2012

2. Question 1 2
This graphic shows the earth’s magnetic field is as if it has a magnet inside. Is the diagram correct?
(a) yes
(b) no
The field lines are backwards! The magnetic field should point towards the geographic north pole

3. Question 2 At the north pole of the earth3
At the north pole of the earth
(a) its a south pole of a magnet
(b) its a north pole of a magnet
(c) the magnetic field points straight up
(d) the magnetic field points parallel to surface of earth
(e) none of these

4. Question 3 4
Which one is Michael Faraday?

5. 5
Question 4
If vector “a” points down, and vector “b” points to the front of the room, what direction does “ab” point?
(a) up
(b) left
(c) right
(d) down
(e) none of these
RIGHT HAND RULE

6. Question 5 The SI units of magnetic field are: (a) Gauss (b) Webers6
Question 5
The SI units of magnetic field are:
(a) Gauss
(b) Webers
(c) emu (electromagnetic unit)
(d) Tesla
(e) pole strength

7. Question 6 The formal definition of north pole of a magnet7
The formal definition of north pole of a magnet
(a) magnetic field emanates from it
(b) magnetic field points into it
(c) the “north seeking” end of a magnet
(d) the positive pole strength of a dipole
(e) none of these