Magnetism and Electromagnetism When the north poles of two bar magnets are brought close together, there will be no force a force of repulsion a downward force a force of attraction no force a force of repulsion a downward force a force of attraction 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 BLI BLI2 Zero None of the listed here BLI BLI2 Zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A keeper is used to Amplify flux Provide a closed path for flux Change the direction of magnetic lines Restore lost flux Amplify flux Provide a closed path for flux Change the direction of magnetic lines Restore lost flux 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 633.8 N/Wb 63380 N/Wb 6338 N/Wb 63.38 N/Wb 633.8 N/Wb 63380 N/Wb ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Strength of an electromagnet can be increased by Increasing the cross-sectional area Increasing current supply All of the listed here Increasing the number of turns Increasing the cross-sectional area Increasing current supply All of the listed here Increasing the number of turns ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of a magnetic field within a magnet is front to back back to front from south to north from north to south front to back back to front from south to north from north to south ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS