According to the first video, “No further credible experiments have been conducted to verify MacDougal’s claims.” Would you recommend additional experiments related to this topic be conducted? Support your view using evidence from the text(s)/video(s)

this is b. how railways dealt with people riding the trains without paying

that is true because that is something they fulfill for their work.

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).