A 0.55 T magnetic field points due east. Part A Find the magnitude of the force

Question

A 0.55 T magnetic field points due east.

Part A

Find the magnitude of the force on a +0.16 C charge moving southward at 4.0 m/s .

Express your answer to two significant figures and include the appropriate units.

Part B

Find the direction of the force on a +0.16 C charge moving southward at 4.0 m/s

Part C

Repeat part A for a –0.16 C charge with the same velocity.

Express your answer to two significant figures and include the appropriate units.

Part D

Repeat part B for a –0.16 C charge with the same velocity.

A.pointing up
B.pointing down

Part A

Find the magnitude of the force on a +0.16 C charge moving southward at 4.0 m/s .

Express your answer to two significant figures and include the appropriate units.

Part B

Find the direction of the force on a +0.16 C charge moving southward at 4.0 m/s

Part C

Repeat part A for a –0.16 C charge with the same velocity.

Express your answer to two significant figures and include the appropriate units.

Part D

Repeat part B for a –0.16 C charge with the same velocity.

A.pointing up
B.pointing down

Explanation / Answer

B = 0.55 T (directed east)
q = 0.16 E-6 C (initially headed south)
v = 4 m/s

F = qvB(sin)
F = 0.16 E-6 x 4 x 0.55 x sin 90°
F = 3.52 E-7 N

B) F = q v "cross" B
= - j "cross" i = +k, it points up and not down.

C) F = qvB(sin)
F = -0.16 E-6 x 4 x 0.55 x sin 90°
F = -3.52 E-7 N

D) F = q v "cross" B
= - j "cross" i = +k, it points up and not down.

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