Free Printable Electrostatics and Magnets

1.

In the Coulomb's Law Equation $F=\frac{Kq_Aq_B}{d^2}$ , what does the variable "q" represent?

a)

Distance between charges

b)

Charge size and sign

c)

Constant

d)

Mass

2.

Which of the following materials is mostly likely to NOT BE MAGNETIC?

a)

A metal nail

b)

A metal paperclip

c)

Iron filings

d)

a cloth towel

3.

The north pole of a one bar magnet and the south pole of a different bar magnet will:

a)

Repel each other

b)

Attract each other

c)

Will not impact each other

d)

More information is required

4.

What is a material called when it allows electrons to flow from one particle to another?

a)

battery

b)

conductor

c)

insulator

d)

open circuit

5.

Charges are measured in

a)

Coulombs (C)

b)

Jules (J)

c)

Newton/Coulombs (N/C)

d)

meters (m)

6.

Magnets can interact without touching.

a)

True

b)

False

7.

The area of magnetic force around a magnet is known as its _____________.

a)

magnetic field

b)

magnetic declination

c)

magnetic fan lines

d)

magnetic tan lines

8.

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.

a)

increase; increase

b)

increase; decrease

c)

decrease; increase

d)

decrease; decrease

9.

A material in which electrons are not able to move easily

a)

Circuit

b)

Insulator

c)

Metal

d)

Conductor

10.

The plastic covering is there to:

a)

Provide a conductor for electrical energy to flow.

b)

Provide an insulator so that electrical energy will not pass outside of the wires.

c)

Provide a conductor so that electrical energy can NOT flow.

d)

Provide an insulator so that electrical energy can flow.

11.

The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the magnitude of charge on q2 doubles?

a)

9.6 N

b)

4.8 N

c)

1.2 N

d)

.6 N

12.

$Coulomb's\ Law:\ F\ =\frac{kq_1q_2}{r^2}$
$k\ =\ 9.0\times10^9\ \frac{Nm^2}{C^2}$

Two particles are placed 0.002 m from each and feel an attractive force of 3.0 N.

If q1 is $1.7\times10^{-7}\ C$ , what does the other charge have to be?

a)

$1.7\times10^{-7}\ C$

b)

$3.8\times10^8\ C$

c)

$-3.9\times10^{-6}\ C$

d)

$-7.8\times10^{-9}\ C$

13.

Two positive charges of 3.0x10^-3 C that are 0.0001 meters apart will:

a)

Repel each other

b)

Attract each other

c)

Will not impact each other

d)

More information is required

14.

Two positive charges of 3.0x10^-3 C that are 0.0001 meters apart. How much force do they experience?

a)

9.0 x 10² C

b)

8.1 x 10¹² C

c)

8.1 x 10⁸ C

d)

2.7 x 10¹⁵ C

Electrostatics and Magnets

Total questions: 14

Worksheet time: 17mins

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