Electric Fields Quiz

The force between charged objects is called the force.(Fill in the blank)

A balloon is rubbed against a wall. After this, it sticks to the wall. Which of the following statements explain why the balloon sticks to the wall?

• The balloon and wall have equal and opposite charges.

• The balloon and wall have equal charges of the same type.

• Atoms have transferred between the balloon and the wall.

• Nuclei have transferred between the balloon and the wall.

• Electrons have transferred between the balloon and the wall.

The arrows on electric field lines point in the direction of the force on...

• any charge.

• a positive charge.

• a negative charge.

• a north-seeking pole.

• a south-seeking pole.

Which of the following shows where the field is strongest in an electric field diagram?

• Where the field lines are closer together.

• Where the field lines are farther apart.

• Where the field lines are thicker.

• Where the field lines are thinner.

• An electric field diagram does not show this.

The diagram shows five small positive charges in the electric field of a large positive charge. Which small charge has an arrow that correctly shows the direction of the force from the large charge?

• A

• B

• C

• D

• E

A small metal pie tin is placed on top of a Van de Graaff generator’s dome, and the generator is switched on. After a short time, the pie tin moves upwards. Which of the following explains why?

• The pie tin gains the same type of charge as the dome.

• The pie tin gains the opposite type of charge to the dome.

• The electrostatic force on the tin becomes less than its weight.

• The electrostatic force on the tin becomes greater than its weight.