Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will Increase Decrease Be excessive Remain Constant Increase Decrease Be excessive Remain Constant ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a vector quantity? Magnetic field intensity Magnetic potential Flux density Relalative permeability Magnetic field intensity Magnetic potential Flux density Relalative permeability ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. Soft iron None of the listed here Stainless steel Hardened steel Soft iron None of the listed here Stainless steel Hardened steel ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism How does the magnetic compass needle behave in a magnetic field? 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 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 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 240 At 2,400 At 2.4 At 24 At 240 At 2,400 At 2.4 At 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? 9.7 T 91 T 91.7 T 917 T 9.7 T 91 T 91.7 T 917 T ANSWER DOWNLOAD EXAMIANS APP
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