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(#M40026822) NDA question General Ability Test Keep an EYE

A current-carrying wire is known to produce magnetic lines of force around the conducting straight around
wire. The direction of the lines of force may be described by -
(a) left-had thumb rule for up-current and right-hand thumb rule for down-current
(b) right-hand thumb rule for up-current and left-hand thumb rule for down-current
(c) right-hand thumb rule for both up and down currents
(d) left-hand thumb rule for both up and down currents

Asked In NDA MAN (10 years ago)

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