When an initially uncharged capacitor is charged through a 25-k? resistor by a 75-V dc ideal power source, it takes 0.23 ms for the capacitor to reach 50% of its maximum charge? What is the capacitance of this capacitor?
What will be an ideal response?
13 nF
You might also like to view...
A constant volume and mass of helium gas at 77°C is heated so that the pressure of the gas doubles. What is the new temperature of the gas in Celsius degrees?
a. 154°C b. 273°C c. 427°C d. 700°C
A certain ideal gas has a temperature 300 K and a pressure 5.0 × 104 Pa. The molecules have a mean free path of 4.0 × 10?7 m. If the temperature is raised to 350 K and the pressure is reduced to 1.0 × 104 Pa the mean free path is then:
A. 6.9 × 10?8 m B. 9.3 × 10?8 m C. 3.3 × 10?7 m D. 1.7 × 10?6 m E. 2.3 × 10?6 m
The last minerals to crystallize from a cooling magma have a
A) high melting point and a low silica content. B) low melting point and a high silica content. C) high melting point and a high silica content. D) low melting point and a low silica content.
What mode of fracture is present for a smooth tensile specimen when a small amount of plastic strain creates a crack that is of sufficient length to cause fracture?
(a) Mode I (b) Mode II (c) Mode III (d) Ductile