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311: Two infinitely long, parallel wires carry currents which are in opposite directions. The two wires:w) Are attracted toward each other
x) Repel each other
y) Have no effect on each other.
ANSWER: X -- REPEL EACH OTHER
312: Which one of the following laws best describes the operation of an electric generator?
w) Ampere's Law
x) Gauss' Law
y) Ohm's Law for Conductors
z) Faraday's Law of Induction
ANSWER: Z -- FARADAY'S LAW OF INDUCTION
313: Capacitors and inductors are commonly used in circuits. Capacitors store electrical energy in the electric field between their plates. How do inductors store energy?
ANSWER: IN A MAGNETIC FIELD SURROUNDING THE INDUCTOR
314: A wave and its reflection produce a standing wave with the distance from NODE to nearest ANTINODE of 4 meters. The wavelength of this wave is:
w) 4 meters
x) 8 meters
y) 12 meters
z) 16 meters
ANSWER: Z -- 16 METERS
315: The wave nature of electrons was EXPERIMENTALLY verified by:
w) Einstein
x) Davisson and Germer
y) Balmer
z) Bohr.
ANSWER: X -- DAVISSON AND GERMER
316: Diffraction and interference demonstrate which of the following?
w) Particle nature of light
x) Wave nature of light
y) Polarization of light
z) Refraction of light
ANSWER: X -- WAVE NATURE OF LIGHT
317: An electromagnetic wave is ALWAYS:
w) Longitudinal
x) Polarized
y) Spherical
z) Transverse.
ANSWER: Z -- TRANSVERSE
318: The crack of a bullwhip results from the bullwhip's tip:
w) Approaching the speed of sound
x) Exceeding the speed of sound
y) Moving with constant velocity
z) None of the above
ANSWER: X -- EXCEEDING THE SPEED OF SOUND
319: This planet's orbit gave proof of the superiority of Einstein's theory of gravity over Newton's:
w) Mercury
x) Earth
y) Mars
z) Pluto
ANSWER: W -- MERCURY
320: The Weber and the Maxwell are units of measure of:
w) Conductance
x) Electrical current
y) Magnetic flux
z) Relative speed
ANSWER: Y -- MAGNETIC FLUX
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