Charge and Charge Conservation Assessment

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Take this as many times as you want. I will record the response with the latest timestamp.

Please type your FIRST name *

Please type your LAST name *

Who is your physics teacher? *

Schmidt

Tautz

Volkening

What period do you have physics? *

Question 1

A metal ball with a net charge of +3 C, a metal cube with a net charge of -2 C, and a metal triangle with a net charge of -4 C are all placed on an insulating surface so that they are all touching. Which choice describes a possible charge distribution after they have been in contact? *

1 point

Everything has a net charge of zero

ball: +3C; cube: -2 C; triangle: -4 C

ball: -5C; cube: -1 C; triangle: +3 C

ball: -1C; cube: -1 C; triangle: -1 C

Diagram for Questions 2 and 3: Taken from

Questions 2 and 3

Two conducting spheres. A and B. rest on insulating stands. Both spheres are initially uncharged and they are touching.

A third conducting sphere, C, has a net positive charge. It is brought close to (but not touching) sphere B as shown.

Which choice best describes the net charge on sphere A at this time? *

1 point

positive

negative

zero

Which choice best describes the net charge on sphere B at this time? *

1 point

positive

negative

zero

Question 4

A balloon has a net charge of +5 microcoulombs. If you bring this balloon close to, but do not touch, the following objects, which objects will be attracted by this balloon? Choose all correct answers. *

1 point

An insulator with a net charge of zero

An insulator with a net charge of -5 microcoulombs

A conductor with a net charge of zero

An insulator with a net charge of +5 microcoulombs

A conductor with a net charge of -5 microcoulombs

A conductor with a net charge of +5 microcoulombs

Required

Question 5

A piece of fur and a balloon both start with a net charge of zero. They are then rubbed together, and the fur acquires a net positive charge while the balloon acquires a net negative charge.

Which statement best explains what happened when the fur and balloon were rubbed together? *

1 point

The fur gained protons from the balloon and lost electrons to the balloon

The fur gained protons from the balloon, but electrons were not transferred

The fur gained electrons from the balloon, but protons were not transferred

The fur lost electrons to the balloon, but protons were not transferred

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