(ne09) Drawing Q, E & V
Fields and Potentials
Hand-Drawing Practice Set 1
Hand-Drawing Practice Set 2
Steps in Using Simulation
Place charges on the screen.
Observe the e-field vectors
Use the tool to draw equi-potential lines
Write the value of the potential [V] on each line
Add sensors to get net force on and acceleration for +-ve charge in a few places
Examples to play
single negative charge
single positive charge
dipole (positive + negative) charge
triangle of negative charges
triangle of positive charges (ion trap)
line of charge
Key Points to concern
Electric field Lines
Start at a positive charges
End at a negative charges
Separation between lines reflects the strength of the field.
(closer together → stronger field)
Electric field lines
have arrows on them to show direction
Perpendicular (⟂) to the electric field lines
Potential at infinity assumed zero.
closer together → greater change in potential
Using the simulation as an aid, please complete electric and potential lines for each of the pictures.
Hand in at the begining of next class for opportunity to try Milestone 2 again.
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