Electric Field

Which of these objects is good at giving electrons?

• Silk

• PVC

• Fur/Hair

• Balloon

Static electricity can be built by friction, conduction or induction. In the case of the balloon experiment, the balloon got charged by?

• Conduction

• Friction

• Induction

“A region where the electric charges experience electric forces” is the definition of?

• Electric Field

• Electromagnetic Field

• Gravitational Field

• Magnetic Field

The diagram shows the electric field lines between two charged objects. From the diagram, it is apparent that object A has ____ charge and object B has ____ charge.

• +,-

• +,+

• -,+

• -,-

Which diagram correctly shows the field lines between two like charges?

• A

• B

• Both

• Neither

Along which line, if we are to put a test charge on the line, will it experience the same amount of force?

• I

• J

• K

• L

The diagram shows the electric field created by a pair of opposite parallel charged plates. At which points has the strongest electric field strength?

• P

• R

• S

• None

Why is the spread of flame greater towards the negative plate?

• Because the electric field strength is higher on the negative plate

• Because the positive ions have larger mass and size than negative ions

• Because there are higher numbers of positive ions than negative ions

• Because of the wind