What is the effect of reversing the current flow in a coil of wire?
AIt will increase its magnetic field
BIt will decrease its magnetic field
CIt has no effect in its magnetism
DIt will reverse the magnetic polarity
Electrical Engineering · Question Bank
Magnetic Circuits
84 questions · page 5 of 5. Answer in your head first, then check the solution.
Which of the following inductors has the lowest eddy current loss?
AAir core
BLaminated core
CMetallic core
DInsulated core
A bar magnet is divided in two pieces. Which one is true?
ATwo new bar magnets are created
BThe bar magnet is demagnetized
CThe magnetic poles are separated
DThe magnetic field of each separated piece becomes stronger
What is residual magnetism?
AMagnetism in a transformer
BMagnetism in a natural magnet
CMagnetism in a solenoid material
DMagnetism remaining in a substance after it has been removed from the influence of a magnetic field
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