Magnetism and Electromagnetism The most effective and quickest may of making a magnet from soft iron is by The use of permanent magnet Rubbing with another magnet Placing it inside a coil carrying current Induction The use of permanent magnet Rubbing with another magnet Placing it inside a coil carrying current Induction ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wirewound core, an increase in current through the coil increases the flux density causes no change in flux density decreases the flux density reverses the flux lines increases the flux density causes no change in flux density decreases the flux density reverses the flux lines 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 Increases None of the listed here Remain same Decreases Increases None of the listed here Remain same Decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Fleming's left hand rule is used to find Direction of magnetic field due to current carrying conductor Polarity of a magnetic pole Direction of force on a current carrying conductor in a magnetic field Direction of flux in a solenoid Direction of magnetic field due to current carrying conductor Polarity of a magnetic pole Direction of force on a current carrying conductor in a magnetic field Direction of flux in a solenoid ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. None of the listed here Hardened steel Stainless steel Soft iron None of the listed here Hardened steel Stainless steel Soft iron ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetomotive force is The flow of an electric current The sum of all currents embraced by one line of magnetic field The passage of magnetic field through an exciting coil The voltage across the two ends of exciting coil The flow of an electric current The sum of all currents embraced by one line of magnetic field The passage of magnetic field through an exciting coil The voltage across the two ends of exciting coil ANSWER DOWNLOAD EXAMIANS APP
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