Quiz7 GGGGG EM

Quiz7 GGGGG EM - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A 2.12 × 10 14 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 10 8 m/s. The wavelength of the wave in carbon tetrachloride is closest to: A) 1070 nm B) 1290 nm C) 1200 nm D) 967 nm E) 1420 nm 1) 2) A 6.53 10 14 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 10 8 m/s. The wavelength of the wave in vacuum is closest to: A) 413 nm B) 368 nm C) 505 nm D) 459 nm E) 314 nm 2) 3) A 8.38 10 14 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 10 8 m/s. The relative magnetic permeability of carbon tetrachloride is 1.00. The dielectric constant of carbon tetrachloride at a frequency of 8.38 10 14 Hz is closest to: A) 2.52 B) 1.38 C) 1.76 D) 2.14 E) 1 3) 4) A planar electromagnetic wave is propagating in the positive x - direction. At a certain point P and at a given instant, the electric Feld of the wave is given by E = - j 82 mV/m. The magnetic vector of the wave, at the point P at that instant is closest to: A) ( - 2.7 × 10 - 10 T) k B) ( + 2.7 × 10 - 10 T) k C) ( + 2.7 × 10 - 10 T) j D) ( - 6.8 × 10 - 9 T) j E) ( + 6.8 × 10 - 9 T) k 4) 5) A planar electromagnetic wave is propagating in the positive x - direction. At a certain point P and at a given instant, the electric Feld of the wave is given by E = - j 12 mV/m. The Poynting vector at the point P at that instant is closest to: A) ( + 3.8 × 10 - 7 W/m 2 ) i B) ( + 1.9 × 10 - 7 W/m 2 ) i C) ( - 1.9 × 10 - 7 W/m 2 ) k D) ( - 3.8 × 10 - 7 W/m 2 ) i E) ( - 1.9 × 10 - 7 W/m 2 ) i 5) 1
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6) The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 724 mW/m 2 . The maximum value of the magnetic Feld in the wave is closest to: A) 7.79 × 10 - 8 T B) 1.56 × 10 - 7 T C) 5.51 × 10 - 8 T D) 1.08 × 10 - 7 T E) 3.89 × 10 - 8 T 6) 7) The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 939 mW/m 2 . The wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. The total energy that traverses the area in a time interval of one minute is closest to: A) 210 J B) 340 J C) 300 J D) 170 J E) 250 J 7) 8) An 800 - kHz radio signal is detected at a point 4.5 km distant from a transmitter tower. The electric Feld amplitude of the signal at that point is 630 mV/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. The magnetic Feld amplitude of the signal at that point, in nT, is closest to: A) 2.5 B) 2.1 C) 1.7 D) 1.3 E) 2.9 8) 9) An 800 - kHz radio signal is detected at a point 8.5 km distant from a transmitter
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This note was uploaded on 12/13/2011 for the course PHYS 2C PHYS 2C taught by Professor Groisman during the Spring '11 term at UCSD.

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Quiz7 GGGGG EM - Exam Name_ MULTIPLE CHOICE. Choose the one...

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