Magnetism and Electromagnetism
In a simple magnetic field the strength of magnet flux

first increases and then decreases till it becomes zero
decreases continuously from initial value to final value
increases continuously from initial value to final value
is constant and has same value in energy part of the magnetic field

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Magnetism and Electromagnetism
The left hand rule correlates to

Magnetic field, electric field and direction of force on a conductor
Current, induced e.m.f. and direction of force on a conductor
Self induction, mutual induction and direction of force on a conductor
Current, magnetic field and direction of force on a conductor

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