Magnetism and Electromagnetism When the north poles of two bar magnets are brought close together, there will be a force of attraction a force of repulsion a downward force no force a force of attraction a force of repulsion a downward force no force ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism In a simple magnetic field the strength of magnet flux is constant and has same value in energy part of the magnetic field decreases continuously from initial value to final value increases continuously from initial value to final value first increases and then decreases till it becomes zero is constant and has same value in energy part of the magnetic field decreases continuously from initial value to final value increases continuously from initial value to final value first increases and then decreases till it becomes zero ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A material which is slightly repelled by a magnetic field is known as diamagnetic material conducting material ferromagnetic material paramagnetic material diamagnetic material conducting material ferromagnetic material paramagnetic material 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
Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Core length increases Flux density decreases Flux density increases Core area increases Core length increases Flux density decreases Flux density increases Core area increases 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? 6 4 12 8 6 4 12 8 ANSWER DOWNLOAD EXAMIANS APP
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