Magnetism and Electromagnetism The materials having low retentivity are suitable for making Permanent magnet None of the listed here Temporary Magnet Weak magnet Permanent magnet None of the listed here Temporary Magnet Weak magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The Biotsavart's law is a general modification of Kirchhoff's law Faraday's laws Ampere's law Lenz's law Kirchhoff's law Faraday's laws Ampere's law Lenz's law ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M M/2 2M M/4 M M/2 2M M/4 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic reluctance of a material Decreases with increasing cross sectional area of material Increases with increasing cross-sec-tional area of material Any of the listed here Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material Increases with increasing cross-sec-tional area of material Any of the listed here Does not vary with increasing cross-sectional area of material 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 100 N 0.01 N 10 N 0.1 N 100 N 0.01 N 10 N 0.1 N 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 Increase Remain Constant Decrease Be excessive Increase Remain Constant Decrease Be excessive ANSWER DOWNLOAD EXAMIANS APP
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