Multiple Choice
Voltage produced by a generator alternates because
A) it produces pulses of current.
B) the magnetic field that produces it alternates.
C) alternations in the mechanical energy input.
D) in effect it is an ac motor in reverse.
E) the current it produces alternates.
Correct Answer:

Verified
Correct Answer:
Verified
Q1: Faraday's law is the law that describes<br>A)electromagnetic
Q2: A superconducting electromagnet makes use of<br>A)low-resistance coils
Q4: Surrounding our planet Earth are<br>A)cosmic rays.<br>B)magnetic fields.<br>C)both
Q5: A transformer actually transforms<br>A)energy from one value
Q7: The sloshing of electrons inside a generator
Q9: A step-down transformer decreases<br>A)current.<br>B)voltage.<br>C)power.<br>D)energy.<br>E)all of the above
Q11: Surrounding every moving electron is<br>A)a magnetic field.<br>B)an
Q35: Power is the rate at which<br>A)energy is
Q77: Metal detectors that locate metal beneath sand
Q86: Which of these statements is true?<br>A)a battery