Electrostatic Force

Rubbing a balloon on hair is an example of static charge build up created by....

• conduction

• friction

• induction

• hairduction

If negative charge is developed on two objects they will__

• attract each other

• repel each other

Tags

NGSS.MS-PS2-3

Consider the conduction charging shown. 

• Electrons move from the insulating stand into the sphere.

• Protons move from the bar into the sphere.

• Electrons move from the charged metal bar into the sphere.

• Protons move from the sphere into the negatively charged bar.

Tags

NGSS.MS-PS2-3

A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod

• gains electrons

• loses electrons

• gains protons

• loses protons

Tags

NGSS.MS-PS2-5

When a plastic rod is rubbed with wool, the wool acquires a positive charge because

• protons are transferred from the wool to the rod

• protons are transferred from the rod to the wool

• electrons are transferred from the rod to the wool

• electrons are transferred from the wool to the rod

A positively charged rod is held near the knob of a neutral electroscope. What best describes what will happen to the leaves?

• the leaves will spread apart and be positive

• the leaves will spread apart and be negative

• the leaves will stay closed and be positive

• the leaves will stay closed and be negative

Tags

NGSS.MS-PS2-5

What charge is the proton?

• positive

• no charge (neutral)

• negative

• Senaida-charged

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.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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

• like signs

• unlike signs

• equal magnitude

• unequal magnitude

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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

• like signs

• unlike signs

• equal magnitude

• unequal magnitude