A light bulb operating at a voltage of 120 Volt has a power of 60 W. What is the current flowing through this bulb?
A) 1.5 A
B) 2.5 A
C) 0.5 A
D) 2 A
E) 1 A
C
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What happens when matter collides with anti-matter?
A) The two particles repel each other, and they fly apart. B) The two particles destroy each other, and create photons. C) The two particles attract each other, and form a neutral atom.
The summer solstice (at the start of summer) is the point on the ecliptic where the Sun
a. crosses the celestial equator moving north. b. crosses the celestial equator moving south. c. is farthest north of the celestial equator halting its northward movement. d. is farthest south of the celestial equator halting its southward movement.
The trade wind belts are regions of generally
A) little rainfall. B) heavy rainfall. C) low temperatures. D) westerly winds.
Which of the following places is the result of volcanoes erupting over a hot spot in the mantle?
A) the Himalayas B) the Appalachians C) California D) Hawaii