Magnetism and Electromagnetism When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle will depend on the radius of the circle will be infinite will be zero will depend on the amount of e.m.f. applied will depend on the radius of the circle will be infinite will be zero will depend on the amount of e.m.f. applied ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a vector quantity? Magnetic potential Relalative permeability Magnetic field intensity Flux density Magnetic potential Relalative permeability Magnetic field intensity Flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 240 At 2,400 At 2.4 At 24 At 240 At 2,400 At 2.4 At 24 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The left hand rule correlates to Magnetic field, electric field and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Current, magnetic field and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Current, magnetic field and direction of force on a conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Paramagnetic materials have relative permeability slightly more than unity slightly less than unity equal to unity equal to that ferromagnetic mate rials slightly more than unity slightly less than unity equal to unity equal to that ferromagnetic mate rials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 63380 N/Wb 633.8 N/Wb 63.38 N/Wb 6338 N/Wb 63380 N/Wb 633.8 N/Wb 63.38 N/Wb 6338 N/Wb ANSWER DOWNLOAD EXAMIANS APP
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