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They will, consequently, take an intermediate direction, which will depend on the relation between the directive and deflecting forces. If the latter exceed the former, the needle will incline more to the magnetic east and west ; if the former exceed the latter, it will incline more to the magnetic north and south. If these forces be equal, it will take a direction at an angle of 45 with the magnetic meridian. The north pole of the needle will, in all cases, be deflected to the left of the current (234). If while the directive force of the needle remains unchanged the intensity of the current vary, the needle will be deflected at a greater or less angle from the magnetic meridian, according as the intensity of the current is increased or diminished. prev next |