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Magnetism
A- same magnetising current gives it a greater magnetic field strength than B. example of such material is iron [soft magnetic]
A- same magnetising current gives it a greater magnetic field strength than B. example of such material is iron [soft magnetic]
See lessTurning effect of a force
The longer the perpendicular distance to the line of action of the force, the greater the moment of the force, hence less force is needed
The longer the perpendicular distance to the line of action of the force, the greater the moment of the force, hence less force is needed
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