Reactance: At what frequency is the reactance of a 20.0-mH inductor equal to 120 ??
A. 318 Hz
B. 637 Hz
C. 796 Hz
D. 955 Hz
E. 1110 Hz
Answer: D
You might also like to view...
A ball starting from rest at the top of an inclined plane accelerates at 2 m/s2 and reaches the bottom of the plane in 3 seconds. What is the length of the plane?
A) 2 m B) 3 m C) 5 m D) 9 m
Which of the following planets has an exosphere?
A) Mercury B) Venus C) Earth D) Mars E) all of the above
There is an uncertainty associated with every measurement
Indicate whether the statement is true or false
Consider two different isotopes of the same neutral element. Which statements about these isotopes are true? (There may be more than one correct choice.)
A) Both isotopes contain the same number of orbital electrons. B) The sum of the protons and neutrons is the same for both isotopes. C) Both isotopes contain the same number of protons. D) Both isotopes contain the same number of neutrons. E) Both isotopes contain the same number of nucleons.