Question

A beam is projected along x-axis and experiences a force due to magnetic field along y axis then what is the direction of a magnetic field

Answer 1

Answer:

Since the α-particles are projected along the X-axis, the direction of the current will be along the X-axis. Magnetic force direction is along the Y-axis. Hence the magnetic field will be in the negative Z-axis direction according to Fleming's left-hand rule.

Explanation:

Hope it helps..