Question

1.The( flow) of free electrons is an electric current. *
a- electric
b-move
c-types
2. Materails in the first (group) are called conductors. *
a- category
b- permit
c- bulb
3.Materails which (provide) a path for an electric current are conductors. *
a- supply
b-conductor
c-circuit
4.All insulators (permit) some flow of electrons. *
a-straight
b- resistance
c-allow
5.Germanuim sometimes (acts) as an insulator and sometimes as a conductor. *
a- cell
b- plates
c-behaves
6. The light bulb has (undergone) various improvements. *
a-subject
b-ductile
c-wires

Answer 1