Magnetism and Electromagnetism The materials having low retentivity are suitable for making Temporary Magnet Weak magnet Permanent magnet None of the listed here Temporary Magnet Weak magnet Permanent magnet None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 2.4 At 2,400 At 240 At 24 At 2.4 At 2,400 At 240 At 24 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density increases remains the same doubles decreases increases remains the same doubles decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. Hardened steel Soft iron None of the listed here Stainless steel Hardened steel Soft iron None of the listed here Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The stray line of magnetic flux is defined as A line of magnetic flux which does not follow the designed path The mean length of a ring shaped coil A line of magnetic flux in a non-uniform field A line vertical to the flux lines A line of magnetic flux which does not follow the designed path The mean length of a ring shaped coil A line of magnetic flux in a non-uniform field A line vertical to the flux lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be 0.01 N 0.1 N 100 N 10 N 0.01 N 0.1 N 100 N 10 N ANSWER DOWNLOAD EXAMIANS APP
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