Pre-Lab 4
Lab meeting time:						Name:


	1. Using a small compass needle, HOW will you find the direction
	   of magnetic field at any given point ?			    (3)












	2. You have to sketch the magnetic field of a few objects in this
	   lab. What are they ?						    (2)













	3. Write the equation for magnetic field of a coil in terms of current
	   flowing through the coil. What graphs will you be plotting to
           get the value of    and how'll you use these to find that value ? (5)