Magnetism and Electromagnetism A keeper is used to Amplify flux Change the direction of magnetic lines Restore lost flux Provide a closed path for flux Amplify flux Change the direction of magnetic lines Restore lost flux Provide a closed path for flux 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? Increases First increases and then decreases depending on the depth of iron in¬sertion Decreases Remains same Increases First increases and then decreases depending on the depth of iron in¬sertion Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Fleming's left hand rule is used to find Direction of force on a current carrying conductor in a magnetic field Polarity of a magnetic pole Direction of flux in a solenoid Direction of magnetic field due to current carrying conductor Direction of force on a current carrying conductor in a magnetic field Polarity of a magnetic pole Direction of flux in a solenoid Direction of magnetic field due to current carrying conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Temporary Magnet None of the listed here Weak magnet Permanent magnet Temporary Magnet None of the listed here Weak magnet Permanent magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A material which is slightly repelled by a magnetic field is known as paramagnetic material ferromagnetic material diamagnetic material conducting material paramagnetic material ferromagnetic material diamagnetic material conducting material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Gilbert is a unit of magnetomotive force electromotive force permittivity conductance magnetomotive force electromotive force permittivity conductance ANSWER DOWNLOAD EXAMIANS APP
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