The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is twice as that of earth is _________________.
Assuming that the charge of an electron is , the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is