Magnetism and Electromagnetism The retentivity of material is useful for the construction of Non-magnetic substances Transformers Permanent magnets Electromagnets Non-magnetic substances Transformers Permanent magnets Electromagnets ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200? 12 4 8 6 12 4 8 6 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2? 91.7 T 917 T 91 T 9.7 T 91.7 T 917 T 91 T 9.7 T 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 Remain same None of the listed here Decreases Increases Remain same None of the listed here Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A keeper is used to Change the direction of magnetic lines Amplify flux Restore lost flux Provide a closed path for flux Change the direction of magnetic lines Amplify flux Restore lost flux Provide a closed path for flux ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetic moment is a scalar quantity vector quantity pole strength universal constant scalar quantity vector quantity pole strength universal constant ANSWER DOWNLOAD EXAMIANS APP
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