If the conductor is open, then between its ends in an alternating magnetic field or when the conductor moves in a constant magnetic field, a potential difference arises due to the phenomenon of electromagnetic induction, while the current is zero. Therefore, it makes no sense to formulate the law of electromagnetic induction for the current strength.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.