AKS 7 - Static Electricity

When you charge a balloon by rubbing it on your hair this is an example of what method of charging?

• Friction
• Conduction
• Grounding
• Induction

The negatively charged balloon is brought near the two cans. What happens?

• The negative charges in Can B move towards the balloon
• The negative charges in Can A move away from the balloon
• The positive charges in Can B move towards the balloon
• The positive charges in Can A move away from the balloon

Which of these is the best definition of polarization?

• The object gains a positive or negative charge from another object.
• The charges in a neutral object separate due to a nearby charged object.
• Charges on a neutral object jump off onto a charged object due to attraction of opposite charges.
• Two objects attract each other because they are both charged.

A negatively charged rod is touched to the top of an electroscope. Which shows the resulting charge?

• A

• B

• C

• D

• E

For an object to have a positive charge, it must ____.

• lose electrons

• gain electrons

• lose protons

• gain protons

Ms Pippin rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.

• The balloons will attract each other.

• The balloons will become positively (+) charged.

• The balloons will pop.

A positively charged rod is touched to the top of an electroscope. Which shows the resulting charge?

• A

• B

• C

• D

• E

When distance increases, electrostatic force ____________; we call this relationship ____________ proportional

• decreases;directly
• decreases;inversely
• increases;inversely
• increases;directly

The graph shows the relationship between the force of interaction and the magnitude of charge. What type of relationship is this?

• Direct

• Indirect

• Inverse

• Reverse

The Electric Force is strongest when charges are...

• close together
• far apart
• the electric force is constant everywhere