Question

Question 1

Adding 20 electrons to an electrically neutral object gives it a charge of

a.-20e

b.10e

c.-10e

d.20e

Question 2

Conservation of electric charge for an isolated system means that

a.the net electric charge remains constant with time.

b.the net electric charge is negative.

c.the net electric charge is zero.

d.the net electric charge increases with time.

Question 3

Like charges

a.repel

b.attract.

c.cancel each other out.

d.exert no forces on each other.

Question 4

Materials that readily conduct electric charge are called

1.electrical insulators.

2.thermal conductors.

3.electrical conductors.

4.thermal insulators.

Answer 1

1) it will have a charge of -20e

2) It means that net electric charge remains constant with time.

3) Like charges repel each other.

4) They are called electrical conductors.

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