Why electric lines of force does not pass through inside the conductor

Dear student,These pattern of lines, sometimes referred to as electric field lines, point in the direction that a positive test charge would accelerate if placed upon the line. As such, the lines are directed away from positively charged source charges and toward negatively charged source charges.So suppose that they intersected a conductor such as a metal. Then the charge carriers (electrons) in the metal would move so that the charge neutralises the field in the metal and so the lines are `expelled` so to speak.