Electrostatics

Presentation

•

Physics

•

9th - 11th Grade

•

Medium

•

NGSS

HS-PS2-4, HS-PS3-5, MS-PS2-3

Standards-aligned

Debra Williams

Used 44+ times

FREE Resource

39 Slides • 32 Questions

Electrostatics

Multiple Choice

Electric charges exert which kind of force?

a field force

a contact force

a gravitational force

a frictional force

Multiple Choice

Why does the balloon stick to the wall?

There is tape on it

The gravitational pull of the wall

The electrons in the wall move away making the wall positive

The friction of the walls surface

Multiple Choice

A negatively charged object and a neutral object can be repelled.

True

False

Multiple Choice

What direction do the field lines point for a positive charge?

Away from the charge

Toward the charge

Perpendicular to the charge

Multiple Choice

What does it mean when the electric field lines are close together?

the field is positive

the field is negative

The field is strong

the field is weak

Multiple Choice

Which type of charges do these balloons have?

like charges

opposite charges

Multiple Choice

The accumulation of excess electric charge on an object is called

Static electricity

Electric discharge

Resistance

Circuit

Multiple Choice

Two like charges

neutralize each other.

repel each other.

must be neutrons.

attract each other.

Multiple Choice

Which of the following labeled points is in the region with the strongest force of electric charge

Multiple Choice

What direction are the electric field lines around an electron?

towards the charge

away from the charge

Multiple Choice

An atom loses an electron. What type of charge does it have now?

positive

negative

Multiple Choice

Which net charge could be found on an object?

4.8 x 10^-19 C

1.8 x 10^-19 C

3.0 x 10^-19 C

2.8 x 10^-19 C

Multiple Choice

A metal sphere having an excess of +5 elementary charges has a net electric charge of

8.0 x 10^-19 C

8.0 x 10¹⁹ C

1.6 x 10^-19 C

5.0 x 10^-19 C

Multiple Choice

What variable do Coulombs represent?

Electrostatic Charge

Force

Distance

Mass

Multiple Choice

When distance increases, electrostatic force ____________; we call this relationship ____________ proportional

decreases;directly

decreases;inversely

increases;inversely

increases;directly

Multiple Choice

The Electric Force is strongest when charges are...

close together

far apart

the electric force is constant everywhere

Multiple Choice

Recap:

Coulomb’s law states that the force between two charged objects will __________ when the magnitude of the object’s charge increases.

Coulomb’s law also states that the force between two charged objects will __________ when the distance between objects increases.

increase; increase

increase; decrease

decrease; increase

decrease; decrease

Multiple Choice

Electrostatic force F is directly proportional to:

r^2 (distance squared)

both q1 and q2

Multiple Choice

When distance increases, electrostatic force ____________; we call this relationship ____________ proportional

decreases;directly

decreases;inversely

increases;inversely

increases;directly

Multiple Choice

If the distance doubles, what happens to the force?

Reduced by half

Reduced by 1/4

Stays the same

Quadruples

Multiple Choice

Which is the value of the constant in Coulomb's equation?

k = 9·10^-9

k = 9.8

k = 6.67·10^-11

k = 9 ·10⁹

Multiple Choice

Which is the value of the constant in Coulomb's equation?

k = 9·10^-9

k = 9.8

k = 6.67·10^-11

k = 9 ·10⁹

Multiple Choice

Two similar metal spheres, A and B, have charges of +2.0 x 10^-6 coulomb and +1.0 x 10^-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?

2.0N

4.0N

8.0N

1.0N

Multiple Choice

Which of the following is not a good insulator?

Copper

Glass

rubber

wool

Multiple Choice

What is the total charge on this system?

-6μC

-3μC

3μC

Multiple Choice

What is the total charge on this system?

-8μC

8μC

Multiple Choice

What is the total charge on this system?

-8μC

8μC

Charging an object

Multiple Choice

A charged balloon is brought near an electroscope but DOES NOT touch the electroscope. This is an example of charging by

Conduction

Convection

Friction

Induction

Multiple Choice

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

conduction

friction

induction

hairduction

Multiple Choice

Transferring a charge without touching is ___

conduction

induction

grounding

Newtons 3rd law

Multiple Choice

Removing a static charge by providing a path to the ground is called __.

electric transfer

grounding

switching

seperation

Multiple Choice

Removing a static charge by providing a path to the ground is called __.

electric transfer

grounding

switching

seperation

Electrostatics

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