Multiple Choice
Transformers use ac to satisfy the required
A) transfer of energy from coil to coil.
B) voltage for transformation.
C) change in magnetic field for operation.
D) change in input current.
E) magnetic field intensities.
Correct Answer:

Verified
Correct Answer:
Verified
Q22: Induced electric and magnetic fields result in<br>A)electromagnetic
Q23: Magnetic field strength inside a current-carrying coil
Q24: The primary of a transformer is the
Q25: The voltage across the input terminals of
Q26: If the voltage produced by a generator
Q28: The discovery of electromagnetic induction is credited
Q29: The metal detectors that people walk through
Q30: An iron core in a transformer<br>A)guides magnetic
Q31: A transformer produces<br>A)energy.<br>B)power.<br>C)neither, but transforms mechanical energy
Q32: Thrust a magnet into the opening of