Select the true statements about alpha particles.

A. Alpha particle formation is accompanied by the conversion of a neutron into a proton.
B. Alpha particles have a mass number of 4.
C. Alpha particle formation is accompanied by the conversion of a proton into a neutron.
D. Alpha particles have a nuclear charge of 1.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.