Magnetism and Electromagnetism The unit for reluctance is tesla At/Wb Wb At/m tesla At/Wb Wb At/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following materials are diamagnetic? Silver Copper Iron Silver and copper Silver Copper Iron Silver and copper ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A magnetic field exists around Moving Charges Copper Iron Aluminium Moving Charges Copper Iron Aluminium 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 2.4 At 240 At 2,400 At 24 At 2.4 At 240 At 2,400 At 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? Decreases First increases and then decreases depending on the depth of iron in¬sertion Remains same Increases Decreases First increases and then decreases depending on the depth of iron in¬sertion Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is varying voltage an electromagnetic field a permanent magnetic field a steady current varying voltage an electromagnetic field a permanent magnetic field a steady current ANSWER DOWNLOAD EXAMIANS APP
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