If the secondary coil of a transformer contains more loops than the primary coil, then it is a
A) step-up transformer.
B) step-down transformer.
A
Physics & Space Science
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The gaps created by the planet Jupiter in the Asteroid belt are called ________.
A. Asteroid gaps B. Kepler gaps C. Jupiter gaps D. Kirkwood gaps
Physics & Space Science
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
Physics & Space Science
A Doppler red shift indicates
a. a shift toward higher frequencies. b. a shift toward shorter wavelengths. c. that a light source is receding relative to the observer. d. none of these.
Physics & Space Science
The external region of the Sun that tends to be pink is the
A) photosphere. B) chromosphere. C) mesosphere. D) corona.
Physics & Space Science