Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 30 At 187 At 300 At 18.75 At 30 At 187 At 300 At 18.75 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permanent magnet Attracts some substances and repels others Attracts all paramagnetic substances and repels others Attracts only ferromagnetic substances Attracts ferromagnetic substances and repels all others Attracts some substances and repels others Attracts all paramagnetic substances and repels others Attracts only ferromagnetic substances Attracts ferromagnetic substances and repels all others ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Temporary magnets are used in All of the listed here Motors Loud speakers Generators All of the listed here Motors Loud speakers Generators ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 2.4 AT 24 AT 0.24 AT 240 AT 2.4 AT 24 AT 0.24 AT 240 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the net magnetic moment should be zero? antiferrimagnetic materials diamagnetic materials ferrimagnetic materials antiferromagnetic materials antiferrimagnetic materials diamagnetic materials ferrimagnetic materials antiferromagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Aluminium Brass Soft iron Copper Aluminium Brass Soft iron Copper ANSWER DOWNLOAD EXAMIANS APP
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