V. Say whether these sentences are true or false: 1) Electrical conductivity of a body depends upon its atomic constitution. 2) There is no difference in the conducting ability of various substances. 3) The longer the wire is the weaker its opposition is. 4) The kind of the insulating material depends upon the purpose it is meant for. 5) Conductors are substances through which electricity is easily transmitted. 6) Insulators do not allow the electric current to flow freely.