Magnetism and Electromagnetism The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength? 0.25 AT/m 25 AT/m 250 AT/m 2500 AT/m 0.25 AT/m 25 AT/m 250 AT/m 2500 AT/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ? 22 x 10"5 N 22 x 10"8 N 22 x 10-6 N 22 x 10"7 N 22 x 10"5 N 22 x 10"8 N 22 x 10-6 N 22 x 10"7 N ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wire-wound core, an increase in current through the coil Decreases the flux density Causes no change in flux density Reverses the flux lines Increases the flux density Decreases the flux density Causes no change in flux density Reverses the flux lines Increases the flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a ferromagnetic material? Nickel Copper Tungsten Aluminium Nickel Copper Tungsten Aluminium ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Gilbert is a unit of conductance electromotive force magnetomotive force permittivity conductance electromotive force magnetomotive force permittivity ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Soft iron Brass Copper Aluminium Soft iron Brass Copper Aluminium ANSWER DOWNLOAD EXAMIANS APP
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