right-hand rule

right-hand rule
noun
: a rule in electricity: if the thumb, the forefinger, and the middle finger of the right hand are bent at right angles to one another with the thumb pointed in the direction of motion of a conductor relative to a magnetic field and the forefinger in the direction of the field, then the middle finger will point in the direction of the induced electromotive force — compare thumb-and-finger rule

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right-hand rule,
a rule used in electricity to show the relation between the direction of the current and the magnetic poles in an electric motor: »

The right-hand rule…states that if the forefinger of the right hand has the shape and direction of the current flow, the thumb of the right hand points to the north pole of the induced magnetic field (Scientific American).


Useful english dictionary. 2012.

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