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Magnetism Review

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

When using the three finger rule, what does your index finger represent?

a)

Direction of magnetic force

b)

Direction of velocity

c)

Direction of magnetic field

d)

Direction of acceleration

2.

When using the three finger rule, what does your middle finger represent?

a)

Direction of acceleration

b)

Direction of magnetic force

c)

Direction of magnetic field

d)

Direction of velocity

3.

When using the three finger rule, what does your thumb represent?

a)

Direction of magnetic field

b)

Direction of magnetic force

c)

Direction of velocity

d)

Direction of acceleration

4.

What is the SI unit for magnetic field?

a)
Gauss (G)
b)
Newton (N)
c)
Tesla (T)
d)
Ampere (A)
5.

What is the equation for Magnetism?

a)
F = qvBcos(theta)
b)
F = qvBsin(theta)
c)
F = qvBsec(theta)
d)
F = qvBtan(theta)
6.

What I a similarity between magnets and electric charges?

a)
They both produce forces that can attract or repel objects.
b)
They both produce light
c)
They are both made of wood
d)
They both have wheels
7.

Will a S pole repel or attract a N pole?

a)

Attract

b)

Repel

8.

Which is the stronger electron motion when it comes to producing magnetic fields?

a)

Spinning motion of electrons

b)

Orbital motion of electrons

9.

How can you make a permanent magnet weaker?

a)
By heating it, subjecting it to strong external magnetic fields, or physically demagnetizing it.
b)
By painting it with a conductive material
c)

By getting it wet

d)
By burying it underground
10.

What is an electromagnet?

a)
An electromagnet is a type of magnet that produces a magnetic field when exposed to sunlight.
b)
An electromagnet is a type of magnet that produces a magnetic field when submerged in water.
c)
An electromagnet is a type of magnet that produces a magnetic field when heated.
d)
An electromagnet is a type of magnet that produces a magnetic field when an electric current flows through it.
11.

True or False: Magnetic field is always perpendicular to velocity

a)

True

b)

False

12.

What is the discrepancy between the orientation of a compass and true north called?

a)
compass variation
b)
north discrepancy
c)
magnetic deviation
d)
magnetic declination
13.

If there are twice as many coils in an electromagnetic, what is the effect to the voltage?

a)

The voltage will halve.

b)
The voltage will double.
c)
The voltage will quadruple.
d)
The voltage will remain the same.
14.

What is the phenomenon of inducing voltage by changing the magnetic field around a conductor called?

a)
Electromagnetic induction
b)
Conductor magnetism
c)
Voltage induction
d)
Magnetic conduction
15.

What is induced voltage not proportional to according to Faraday's law?

a)

Number of Loops

b)

The cross-sectional area of each loop

c)

The rate at which the magnetic field changes within those loops

d)

The material used for the wire and magnet

16.

What is the Magnetic force if q=3C, v=9m/s, theta=90, and B=1

a)
81 N
b)
45 N
c)
12 N
d)
27 N
17.

What is the Magnetic force if q=10C, v=7m/s, theta=30, and B=4

a)

70N

b)

280N

c)

210N

d)

140N

18.

What is the Magnetic force if q=5C, v=5m/s, theta=90, and B=1/2

a)
12.5 N
b)
2.5 N
c)
25 N
d)
15 N
19.

What is the Magnetic field strength if F=100N q=5C, v=10m/s, and theta=90

a)
5 T
b)
200 T
c)
50 T
d)
2 T
20.

What is the Magnetic field strength if F=240N q=6C, v=8m/s, and theta=90

a)
5 T
b)
10 T
c)

6 T

d)
3 T
21.

What is the Magnetic force when i=5A, L=2m, B=6T, and theta=90 (F=i*L*sin(theta)*B)

a)
75 N
b)
45 N
c)
60 N
d)
30 N
22.

What is the Magnetic force when i=3A, L=13m, B=4T, and theta=90 (F=i*L*sin(theta)*B)

a)
12N
b)
156N
c)
52N
d)
34N
23.

What is the Current when F=50N, L=4m, B=5T, and theta=90 (F=i*L*sin(theta)*B)

a)
1.5 A
b)
2.5 A
c)
3.5 A
d)
4.0 A
24.

What is the Magnetic field strength when F=200N, i=5, L=4m, and theta=30 (F=i*L*sin(theta)*B)

a)

20 T

b)

15 T

c)

10 T

d)

8.66 T

25.

What is theta when F=50N, i=2A, L=5m, and B=5T (F=i*L*sin(theta)*B)

a)

90 degrees

b)

30 degrees