Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 30 AT 3 AT 0.3 AT 300 AT 30 AT 3 AT 0.3 AT 300 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? It assures a position right angle to magnetic field None of the listed here It assures a position which follows a line of magnetic flux It starts rotating It assures a position right angle to magnetic field None of the listed here It assures a position which follows a line of magnetic flux It starts rotating ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2? 917 T 91 T 91.7 T 9.7 T 917 T 91 T 91.7 T 9.7 T ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permeable substance is one Which is a good conductor Through which the magnetic lines of force can pass very easily Which is a bad conductor Which is a strong magnet Which is a good conductor Through which the magnetic lines of force can pass very easily Which is a bad conductor Which is a strong magnet 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 100 N 0.01 N 0.1 N 10 N 100 N 0.01 N 0.1 N 10 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a vector quantity? Relalative permeability Flux density Magnetic potential Magnetic field intensity Relalative permeability Flux density Magnetic potential Magnetic field intensity ANSWER DOWNLOAD EXAMIANS APP
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