Reactance: A pure inductor is connected to an ac power supply. In this circuit, the current
A. leads the voltage by 90°.
B. is in phase with the voltage.
C. lags the voltage by 45°.
D. lags the voltage by 90°.
E. leads the voltage by 45°.
Answer: D
You might also like to view...
Consider two cylinders of gas identical in all respects except that one contains oxygen O2 and the other helium He. Both cylinders initially contain the same volume of gas at 0°C and 1 atm of pressure and are closed by a movable piston at one end
Both gases are now compressed adiabatically to one-third their original volume. (a) Which gas will show the greater temperature increase? 1. the O2 2. the He 3. Neither; both will show the same increase. 4. It is impossible to tell from the information given. (b) Which gas will show the greater pressure increase? 1. the O2 2. the He 3. Neither; both will show the same increase. 4. It is impossible to tell from the information given.
Express an angle of 35.20 rad in degrees
What will be an ideal response?
In a laser the emitted light is __________
Fill in the blank(s) with correct word
The diameter of the Sun is determined by measuring its ________ and ________.
A. mass; density B. distance; volume C. volume; density D. distance; angular size