Q1#1. A radio wave is:Aan energy wave comprising an electrical field in the same plane as a magnetic fieldBan electrical field alternating with a magnetic fieldCan energy wave where there is an electrical field perpendicular to a magnetic fieldDan energy field with an electrical component
Q2#2. The speed of radio waves is:A300 km per secondB300 million metres per secondC162 nm per secondD162 million nm per second
Q3#3. The plane of polarisation of an electromagnetic wave is:Athe plane of the magnetic fieldBthe plane of the electrical fieldCthe plane of the electrical or magnetic field dependent on the plane of the aerialDnone of the above