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U8: Electromagnetism Math Review

Total questions: 13

Worksheet time: 3hrs 15mins

Name
Class
Date
1.

A stream of electrons is moving at 250 m/s downward in a magnetic field is acted upon by a 200 N force towards the south. The field has a strength of .12 T towards the east. Calculate the charge on the electrons.

a)

.096 C

b)

6.67 C

c)

10.4 C

d)

3.27 C

2.

A force of 5.7 E -15 N acts toward the west on a moving charge of .035 C. A magnetic field of .65 T is directed down. Calculate the velocity of the electron.

a)

4.8 E -12

b)

1.05 E -13

c)

3.9 E -12

d)

2.5 E -13

3.

A wire carrying a current of 3.4 A east is perpendicular to a magnetic field of .08 T downward. The force on the wire is 2.3 N. Calculate the length of the wire.

a)

8.5 m

b)

.12 m

c)

9.7 m

d)

.074 m

4.

What is the current of a .004 m wire in a .86 T magnetic field, with a force of 4.2 E -3 ?

a)

.82 A

b)

2.04 A

c)

1.2 A

d)

1.83 A

5.

Determine the force acting on an .0025 C charge moving perpendicularly through a magnetic field of strength 0.978 T upward at a velocity of 230 m/s toward the east.

a)

9406 N

b)

.56 N

c)

1.5 N

d)

214 N

6.

A stream of electrons is moving at 250 m/s downward in a magnetic field is acted upon by a 200 N force towards the south. The field has a strength of .12 T towards the east. Calculate the charge on the electrons.

a)

.096 C

b)

6.67 C

c)

10.4 C

d)

3.27 C

7.

A force of 5.7 E -15 N acts toward the west on a moving charge of .035 C. A magnetic field of .65 T is directed down. Calculate the velocity of the electron.

a)

4.8 E -12

b)

1.05 E -13

c)

3.9 E -12

d)

2.5 E -13

8.

A wire carrying a current of 3.4 A east is perpendicular to a magnetic field of .08 T downward. The force on the wire is 2.3 N. Calculate the length of the wire.

a)

8.5 m

b)

.12 m

c)

9.7 m

d)

.074 m

9.

What is the current of a .004 m wire in a .86 T magnetic field, with a force of 4.2 E -3 ?

a)

.82 A

b)

2.04 A

c)

1.2 A

d)

1.83 A

10.

What is the magnetic field of a .03 C charged particle that is traveling 400 m/s and exerts a force of 700 N?

a)

58.3 T

b)

19.04 T

c)

.0525 T

d)

7.56 T

11.

Find the length of a wire that has a 7.3 A current, a .056 T magnetic field, and a 5.4 E-3 N force.

a)

.025 m

b)

.0041 m

c)

.013 m

d)

.0038 m

12.

A straight segment of wire has a length of .6 m and carries a current of 2.0 A. It is oriented at right angles to a magnetic field of 0.9 T. What is the magnitude of the magnetic force on this segment of the wire?

a)

3.7 N

b)

2.13 N

c)

1.08 N

d)

.875 N

13.

Determine the force acting on an .0025 C charge moving perpendicularly through a magnetic field of strength 0.978 T upward at a velocity of 230 m/s toward the east.

a)

9406 N

b)

.56 N

c)

1.5 N

d)

214 N