4. to use your left hand to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you must point your

U must point ur forefinger in the direction of the lines of force

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.