In Figure P30.21, a charged particle has been suddenly ac- celerated downward, producing the electric field line pattern shown. When the kinks in the field lines reach the metal rod at the left, they produce a downward current in the rod. Is the particle that has been accelerated positively or negatively charged? . Figure P30.21

In Figure P30.21, a charged particle has been suddenly ac- celerated downward, producing the electric field line pattern shown. When the kinks in the field lines reach the metal rod at the left, they produce a downward current in the rod. Is the particle that has been accelerated positively or negatively charged? . Figure P30.21