1) What is the main different between scalar and vector? a) direction b) magnitude  c) distance d) none 2) Electromagnetic fields are a combination of a) Electric b) vector c) scalar d) magnetic 3) In what year Marconi transmits and received radio waves across the Atlantic Ocean? a) 1600 b) 1873 c) 1901 d) 1887 4) Light consists of electric and magnetic fields oscillating in tandem. What this statement is all about? a) Maxwells prediction b) Faradays prediction c) Ohms law d) None 5) In vacuum, the frequency and wavelength are related by a) Maxwell equation b) electricl field c) magnetic field d) speed of light

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