Question

QUESTION 13

1. A 150-turn coil has a current of 12 A. The coil's radius is 0.050m and its length is 0.18m. Determine the magnetic flux through the circular area in the center of the coil.

a. 7.0 x 10 ^ -4 Wb

b. 1.18 x 10 ^ -5 Wb

c. 4.3 x 10 ^ -4 Wb

d. 2.2 x 10 ^ -3 Wb

e. 9.9 x 10 ^ -5 Wb

QUESTION 14

1. A circular cable has 275 turns and a radius of 0.045 m. The cable is used as a generator rotating it in a magnetic field of 0.500 T. If the maximum "emf" is 175 V, determine the angular speed of the generator.

a. 490 rad / s

b. 28 rad / s

c. 130 rad / s

d. 200 rad / s

e. 50 rad / s

QUESTION 15

1. An FM radio station has a frequency of 95.5 MHz. The frequency of a competing station is 102.7 MHz. Determine the difference between the wavelength emitted by the two stations.

a. 2.4 m

b. 42 m

c. 0.45 m

d. 0.22 m

e. 0.84 m

QUESTION 16

1. The various colors of visible light differ in:

a. frequency and wavelength

b. only in frequency

c. frequency and its speed in a vacuum

d. its speed in a vacuum

e. only in wavelength

Answer 1

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