Magnetism and Electromagnetism Which of the following materials are diamagnetic? Iron Silver Copper Silver and copper Iron Silver Copper Silver and copper ANSWER DOWNLOAD EXAMIANS APP
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? 25 AT/m 250 AT/m 2500 AT/m 0.25 AT/m 25 AT/m 250 AT/m 2500 AT/m 0.25 AT/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is 2,000 V 31.25 V 3,125 V 1,000 V 2,000 V 31.25 V 3,125 V 1,000 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 240 AT 0.24 AT 2.4 AT 24 AT 240 AT 0.24 AT 2.4 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
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 None of the listed here Remain same Increases Decreases None of the listed here Remain same Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the north poles of two bar magnets are brought close together, there will be a force of attraction a force of repulsion no force a downward force a force of attraction a force of repulsion no force a downward force ANSWER DOWNLOAD EXAMIANS APP
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