Electric Force, Field and Potential Pt.1

When hair is rubbed with a rubber balloon, the balloon becomes negatively charged because

• the balloon loses electrons to the hair

• the balloon loses protons to the hair

• the balloon gains electrons from the hair

• the balloon gains protons from the hair

A particle enters the space between two charged plates. As the negative charge passes it will

• be deflected toward the negative plate

• be deflected toward the positive plate

• continue in a straight line

• stop

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What is the total charge in the system?

• -2C

• 4C

• 8C

• 2C

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If the two charges touch and then separated, what is the charge of A?

• -2C

• 1C

• 8C

• 2C

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What is the sign of the following charge?

• positive

• negative

• neutral

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What is the direction of the electric field at point A?

• up

• down

• left

• right

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If an electron was placed at Pt. A what is the direction of the force that the electron feels?

• up

• down

• left

• right

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Is the image of the electric fields of the oppositely charged particles correct?

• yes

• no

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The electric force between two charges if one of the charges gets quadrupled will ________ .

• decrease by 4x

• decrease by 16x

• increase by 4x

• increase by 16x

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Which diagram best represents the charge distribution on the balloon and wall?

• A

• B

• C

• D

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