If the number of turns of wire on an electromagnet increases, the magnetomotive force mmf ________.
A) remains the same
B) decreases
C) increases
Correct Answer:
Verified
Q41: Like magnetic poles _.
A)have the same current
Q42: The movable part of the relay is
Q43: Soft iron has a high _.
A)reactance
B)resistance
C)permeability
D)mmf
Q44: An ampere-turn is a unit of _.
A)magnetomotive
Q45: Electromagnetic induction is best defined as the
Q47: If some turns of Wire are removed
Q48: A relay is a device that _.
A)isolates
Q49: An iron core electromagnet has a higher
Q50: Applying an ac voltage to an electromagnetʹs
Q51: If more turns of Wire are added
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