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 What is the mmf of a wire with 8 turns carrying three amperes of current? 0.24 AT 2.4 AT 240 AT 24 AT 0.24 AT 2.4 AT 240 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
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 zero will be infinite will depend on the amount of e.m.f. applied will depend on the radius of the circle will be zero will be infinite will depend on the amount of e.m.f. applied ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M/2 2M M/4 M M/2 2M M/4 M ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The induced voltage across a stationary conductor in a stationary magnetic field is decreased increased reversed in polarity zero decreased increased reversed in polarity zero ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Tungsten Cobalt Nickel Chromium Tungsten Cobalt Nickel Chromium ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS