In an LCR series circuit, if the AC frequency is decreased to a very small value, what value does the magnitude of the angle between the current and voltage phasors approach?
a. 90°
c. 0°
b. 180°
d. 45°
A
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Answer each of the following questions to compare the two plots.
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How does Io get heated by Jupiter?
a. auroras b. ultraviolet radiation c. infrared radiation d. tidal heating
A hunter on level ground fires a bullet at an angle of 10 degrees above the horizontal while simultaneously dropping another bullet from the level of the rifle. Which bullet will hit the ground first?
A) the one dropped B) the one fired C) both hit at the same time.
When a magnet is moved to and fro in a wire coil, voltage is induced. If the coil has twice as many loops, the voltage induced is
A) half. B) the same. C) twice. D) four times as much. E) none of the above