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 Decreases Increases Remains same First increases and then decreases depending on the depth of iron in¬sertion Decreases Increases Remains same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The susceptibility of paramagnetic materials generally lies between KT3 and 1CT6 1CT3 and 1CT7 KT4 and KT8 10"2 and KT5 KT3 and 1CT6 1CT3 and 1CT7 KT4 and KT8 10"2 and KT5 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Susceptibility is positive for diamagnetic substances None of these ferromagnetic substances non-magnetic substances diamagnetic substances None of these ferromagnetic substances non-magnetic substances ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following materials are diamagnetic? Silver and copper Copper Silver Iron Silver and copper Copper Silver Iron ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetising steel is normals difficult because it has low permeability it has high permeability it has high specific gravity it corrodes easily it has low permeability it has high permeability it has high specific gravity it corrodes easily ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS