A battery has an internal resistance of 4.0 ?. Which of the following load resistors would have the most power delivered to it when connected across the battery?
a. 1.4 ?
b. 2.0 ?
c. 4.0 ?
d. 8.0 ?
e. 16 ?
c
You might also like to view...
Scientists once thought that Earth's primary atmosphere was composed of _____
A) hydrogen and methane B) nitrogen and oxygen C) carbon dioxide and methane D) oxygen and hydrogen
Resistance and Resistivity: How much current will be flowing through a 57.0-m length of copper wire with radius 5.7 mm if it is connected to a source supplying 62.0 V? The resistivity of the metal is 1.68 × 10-8 ? ? m.
A. 6600 A B. 37 × 108 A C. 190 nA D. 3900 A
A person makes ice tea by adding ice to 1.8 kg of hot tea, initially at 80°C. How many kilograms of ice, initially at 0.00°C, are required to bring the mixture to 10°C?
The heat of fusion of ice is 334 kJ/kg, and we can assume that tea has essentially the same thermal properties as water, so its specific heat is 4190 J/(kg ? K). A) 1.0 kg B) 1.2 kg C) 1.4 kg D) 1.5 kg E) 1.7 kg
Why are there fewer large impact craters on the Earth's seafloor than on the continents?
A) Seafloor crust is younger than continental crust, so it has had less time in which to suffer impacts. B) The oceans slow large impactors and prevent them from making craters. C) Erosion erases impact craters must faster on the ocean bottom than on land. D) Most impacts occur on the land.