Which nuclear emission moving through an electric field would be deflected toward the positive electrode? a.) alpha particle b.) beta particle c.) gamma radiation d.) proton

As a rule, opposite charges attract. So,you would expect that the particle that would deflect towards the positive electrode has a negative charge. Now, an alpha particle is basically a neutral Helium atom. Beta particle is an electron. Gamma particle has no charge (neutral). Thus, the answer is B.