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 Increases None of the listed here Decreases Remain same Increases None of the listed here Decreases Remain same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A keeper is used to Provide a closed path for flux Restore lost flux Amplify flux Change the direction of magnetic lines Provide a closed path for flux Restore lost flux Amplify flux Change the direction of magnetic lines ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The induced voltage across a stationary conductor in a stationary magnetic field is zero reversed in polarity increased decreased zero reversed in polarity increased decreased ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the net magnetic moment should be zero? antiferrimagnetic materials diamagnetic materials antiferromagnetic materials ferrimagnetic materials antiferrimagnetic materials diamagnetic materials antiferromagnetic materials ferrimagnetic materials ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The retentivity of material is useful for the construction of Non-magnetic substances Electromagnets Permanent magnets Transformers Non-magnetic substances Electromagnets Permanent magnets Transformers ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be 10 N 0.1 N 100 N 0.01 N 10 N 0.1 N 100 N 0.01 N ANSWER DOWNLOAD EXAMIANS APP
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