You will need to access the simulation to answer the questions click here to access:

http://thephysicsaviary.com/Physics/Programs/Labs/FieldFromWire/

Click on "Location of the Field Sensor." Use the arrows to move the field sensor up and down the field.

• How does the field strength vary with VERTICAL POSITION?

• How does the field strength vary with HORIZONTAL POSITION?

Click on "Current" to observe the magnitude of the electric current in the wire. Use the arrows to vary the current up and down.

• What direction are the electrons moving in the wire and what does this indicate about the direction of the current?

• How does the field strength vary with current strength?

• Click on "Direction" to switch the direction of the current in the wire. How does the field change when you switch current direction?