What potential difference is required across an 8.0-? resistor to cause 2.0 A to flow through it?
What will be an ideal response?
16 V
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LR Circuits: A resistor and an inductor are connected in series to a battery. The time constant for the circuit represents the time required for the current to reach
A. 25% of the maximum current. B. 37% of the maximum current. C. 63% of the maximum current. D. 75% of the maximum current. E. 100% of the maximum current.
Suppose an object is in free fall. Each second the object falls:
a. the same distance as in the second before. b. a larger distance that in the second before. c. with the same instantaneous speed. d. with the same average speed. e. none of above
Which of the following indicates the presence of high-mass stars in a region of recent star formation?
A) closely spaced low-mass stars B) ionization nebulae C) globular clusters D) planetary nebulae
What is the temperature of a system in thermal equilibrium with another system made up of ice and water at one atmosphere of pressure?
a. 0°F b. 273 K c. 0 K d. 100°C