Magnetism and Electromagnetism When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage increases reaches zero remains constant decreases increases reaches zero remains constant decreases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be BLI2 BLI None of the listed here Zero BLI2 BLI None of the listed here Zero 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 In a simple magnetic field the strength of magnet flux decreases continuously from initial value to final value first increases and then decreases till it becomes zero increases continuously from initial value to final value is constant and has same value in energy part of the magnetic field decreases continuously from initial value to final value first increases and then decreases till it becomes zero increases continuously from initial value to final value is constant and has same value in energy part of the magnetic field 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? Remains same Decreases First increases and then decreases depending on the depth of iron in¬sertion Increases Remains same Decreases First increases and then decreases depending on the depth of iron in¬sertion Increases ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ? 6338 N/Wb 63.38 N/Wb 63380 N/Wb 633.8 N/Wb 6338 N/Wb 63.38 N/Wb 63380 N/Wb 633.8 N/Wb ANSWER DOWNLOAD EXAMIANS APP
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