The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength?
A. 2500 AT/m
B. 250 AT/m
C. 25 AT/m
D. 2.5 AT/m
Answer: Option B
This Question Belongs to Electrical Engineering >> Magnetism And Electromagnetism
Join The Discussion
Comments ( 2 )
Related Questions on Magnetism and Electromagnetism
Which of the following is a vector quantity?
A. Relative permeability
B. Magnetic field intensity
C. Flux density
D. Magnetic potential
What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current?
A. 2,400 At
B. 240 At
C. 24 At
D. 2.4 At
Magnetism of a magnet can be destroyed by
A. heating
B. hammering
C. by inductive action of another magnet
D. by all above methods
Strength of an electromagnet can be increased by
A. increasing the cross-sectional area
B. increasing the number of turns
C. increasing current supply
D. all above methods
H= NI/L = 50x 1/200mm
= 250
Plz explain it