Electric Field D1 2/10/26

Open Ended

How was your 3 day weekend? Share goals for this short week!

• Static is created when rubber belt rotates around metal "brush"

• Rubber belt gives away e- so it is +

• The metal ball becomes +

​How a Van de Graaf (VDG) works:

Fill in the Blank

What does the dome have that allows it to have this influence?

Electric Field

While the force is greater on the larger charge, the force/charge is the same.

This is called Electric Field

OPPOSITES ATTRACTS

LIKES REPEL

What is an Electric Field?

• Michael Faraday suggested the idea of a force field

to explain how the electric force can act at a
distance.

• An electric field is a property of the space around a

charged object that exerts forces on other charged
objects.

• You cannot see an electric field, but there are ways

to detect that an electric field is present.

Multiple Choice

What is an electric field?

• A property of the space around a charged object that exerts forces on other charged objects.

• The force between two point charges.

• The spacing between electric field lines.

Modeling the Electric Field

• Electric field lines are directed toward negative

charges and away from positive charges.

• Electric field lines act in direction of a POSITIVE charge

• Electric field lines are directed toward negative

Electric Field Lines Examples

​Positive Point Charge

​Negative Point Charge

Attractive Forces

Repulsion Forces

Multiple Choice

What is the DIRECTION of electric field around a POSITIVE charge?

• They are directed towards the positive charges.

• They are directed away from the positive charges.

Multiple Choice

What is the DIRECTION of electric field around a NEGATIVE charge?

• They are directed towards the negative charges.

• They are directed away from the negative charges.

Draw

Draw the electric field lines around the + and - charges

Draw

Draw the electric field around the two charges

Poll

Do you know how to draw electric field lines around + and - charges?

• ????

Categorize

Options (6)

Categorize each object as Conductor, Insulator, Semiconductors, or None

Conductor

Insulator

Poll

Do you know the differences between a conductor vs insulator?

• ????