The correct statement is Option B: - Option B A straight current-carrying conductor has circular magnetic field lines around it. Why the others are incorrect: Option A A neutral, current-carrying wire does not produce an electric field around it (externally it remains electrically neutral). Option C Fleming's Left-Hand Rule gives the direction of force on a current in an external magnetic field, not the field created by the current itself. The field around a straight conductor follows the Right-Hand Thumb Rule. Option D Inside a long, closely wound solenoid the magnetic field is essentially uniform along its length.