Question: QUESTION 1 What direction does electric force act between an electronand proton? a. Attract b. Repel c. Neutral d. Up QUESTION 2 Two charged objects

QUESTION 1

What direction does electric force act between an electronand proton?

a.

Attract
b.

Repel
c.

Neutral
d.

Up

QUESTION 2

Two charged objects have an electric force of 8N.If the distance between them is doubled, what is the electric force?

a.

Increases
b.

Decreases
c.

Stays the same
d.

Becomes zero

QUESTION 3

What do the direction of electric field lines show?

a.

The strength of the field
b.

The direction of the force on a positive charge
c.

The size of the field
d.

The distance of the field

QUESTION 4

A charged plastic ruler is brought near a pile of small pieces of paper. Some of the paper is attracted to the ruler and some of the paper is repelled. What do you know about the charge of the paper?

a.

It is positive
b.

It is negative
c.

It is neutral
d.

Some pieces are positive and some are negative

QUESTION 5

Which compass needle orientation(s) in the figure below might correctly describe the magnet's field at that point?

a.

A
b.

B
c.

C
d.

D

QUESTION 6

Where is the magnitude of a magnetic field around a permanent magnet greatest?

a.

Close to the poles
b.

Far from the poles
c.

The magnitude is equal at all points on the field
d.

The magnitude depends on the material of the magnet

What direction will the magnetic field act between two North poles of two magnets?

a.

Attractive
b.

Repulsive
c.

Neutral
d.

There is no magnetic field present between two North poles

QUESTION 8

What is it called when an electric field is created by a magnet and coil of wire?

a.

Electromagnetism
b.

Magnetism
c.

Magnetic Induction
d.

Magnetic Shielding

QUESTION 9

Which of the following items contains an electric field?

a.

A neutral plastic rule
b.

A wire with electricity flowing through it
c.

A charged balloon
d.

B and C

QUESTION 10

Why does a compass point north?

a.

That is the direction of Earth's magnetic south pole
b.

That is the direction of Earth's magnetic north pole
c.

That is the direction of the magnetosphere
d.

That is the direction magma flows in the Earth

QUESTION 11

What is the correct equation to solve for electric force?

a.

F = kq1q2/ r2
b.

F = Gm1m2/ r2
c.

F = ma
d.

F = qEd

QUESTION 12

What is the electric force between +5C charge and a -2C charge separated by a distance of 0.02m?

a.

10 N
b.

500 N
c.

4.5 x1012N
d.

2.25 x1014N

QUESTION 13

What is the correct equation to solve for gravitational force?

a.

F =kq1q2/r2
b.

F =Gm1m2/r2
c.

F = lw
d.

F =qEd

QUESTION 14

What is the gravitational force between a 5 kg mass and a 2kg mass separated by a distance of 0.02 m?

a.

1.67 x106N
b.

3.35 x108N
c.

10 N
d.

500 N

QUESTION 15

What is NOT a similarity between electricity and magnetism?

a.

Both have fields
b.

Both produce a force
c.

Both can repel objects
d.

Both have positive and negative sides

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