Author Question: A 1.0-m long wire is carrying a certain amount of current. The wire is placed perpendicular to a ... (Read 72 times)

joesmith1212 · **on:** Jul 29, 2018

A 1.0-m long wire is carrying a certain amount of current. The wire is placed perpendicular to a magnetic field of strength 0.20 T. If the wire experiences a force of 0.60 N, what is the magnitude of the current moving through the wire?

A)

2.0 A
B)

1.0 A
C)

3.0 A
D)

4.0 A
E)

5.0 A

Question 2

The windings of a DC motor have a resistance of 6.00 . The motor operates on 120 V AC, and when running at full speed it generates a back emf of 105 V. What current does the motor draw when operating at full speed?

A)

2.50 A
B)

5.00 A
C)

17.5 A
D)

20.0 A
E)

37.5 A