A current-carrying wire is known to produce magnetic lines of force around the conducting straight wire. The direction of the lines of force may be described by:

  • left-hand thumb rule for up-current and right-hand thumb rule for down current
  • right-hand thumb rule for up-current and left-hand thumb rule for down current
  • right-hand thumb rule for both up and down currents
  • left-hand thumb rule for both up and down currents Show Answer
 A current-carrying wire is known to produce magnetic lines of force around the conducting stra
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