# Quick induced current from magnetic field question direction of current?

With RHR-1, if the rod moves to the right in a field coming into the page, the force will move positive charge up (in reality move negative electrons down) in the rod, and induce a current
but why is the current counter clockwise?

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Gokul43201
Staff Emeritus
1) Think of the Lorentz force on a charge in a magnetic field, $\vec{F} = q(\vec{v} \times \vec{B})$. Using the RHR tells you that the force acts upwards along the rod, making the current want to go up the rod and hence counter-clockwise. Taking this a step further, this Lorentz force merely results from an electric field that is set up in a moving conductor in a B-field. This electric field set up across the rod propagates through the rest of the loop, forcing the current to travel in the required direction.