Magnetism and Electromagnetism Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials. circular None of the listed here rectangular triangular circular None of the listed here rectangular triangular ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism An electromagnetic field exists only when there is decreasing current an increasing current voltage current decreasing current an increasing current voltage current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil? First increases and then decreases depending on the depth of iron in¬sertion Increases Decreases Remains same First increases and then decreases depending on the depth of iron in¬sertion Increases Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The unit for permeability is Wb At/m Wb/At × m At/Wb Wb At/m Wb/At × m At/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 187 At 300 At 18.75 At 30 At 187 At 300 At 18.75 At 30 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb? 600 T 6,000 T 6 T 600 T 600 T 6,000 T 6 T 600 T ANSWER DOWNLOAD EXAMIANS APP
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