The researchers use a negatively charged cryogen in the experiment. A negative charge is located at the center of the lesion. The charge's velocity should be in which direction so that the magnetic force on it reinforces the force from the electric field?
A. Up (correct)
B. Down.
I had trouble figuring out which direction the magnetic field was pointing in which is needed to solve the problem. The explanation says since the cryogen is moving rightward, it generates a magnetic field...
Direction of magnetic field
A. Up (correct)
B. Down.
I had trouble figuring out which direction the magnetic field was pointing in which is needed to solve the problem. The explanation says since the cryogen is moving rightward, it generates a magnetic field...
Direction of magnetic field