Electric Forces

Electric Forces

Assessment

Assessment

Created by

Esther Haller

Science

8th Grade

1K plays

Medium

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15 questions

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1.

Multiple Choice

45 sec

1 pt

When you walk across a carpet in socks, they pick up charges. Later, there aren't any charges in your socks. what probably happened to the charges?

The charges disappeared.

The charges switched signs.

The charges transferred to another object.

The charges broke apart into smaller particles.

2.

Multiple Choice

1 min

1 pt

You have 2 circular objects, and each has a positive charge near each other, but not touching. Which statement describes the force that is exerted on the objects due to their electric charge?

There is a force pushing both objects to the left.

There is a force pulling the objects toward each other.

There is a force pushing the objects away from each other.

There is no force on the objects due to their electric charge.

3.

Multiple Choice

30 sec

1 pt

A repelling force occurs between two charged objects when the charges of are of __________.

like signs

unlike signs

equal magnitude

unequal magnitude

4.

Multiple Choice

30 sec

1 pt

An attracting force occurs between two charged objects when the charges are of _______________.

like signs

unlike signs

equal magnitude

unequal magnitude

5.

Multiple Choice

2 mins

1 pt

You have two pairs of charged objects interacting with each other. The first pair (A and B) are 10 cm apart. A has a +1 charge and B has a -1 charge.

Pair C and D are 17cm apart. C has a +1 charge, and D has a -1 charge.

Which of these statements is true?

There are no electric forces because the charges in each pair of objects cancel.

The electric force between A and B is smaller than the electric force between C and D.

The electric force between A and B is greater than the force between C and D.

The electric force between A and B is identical in magnitude to the electric force between C and D.

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