Calendar: 1883-1884 Page 652

648 APPLIED SCIENCES Describe Coulomb's method of investigating the laws of electrical repulsion and state the results of his investiga tions If two small spheres are charged with quantities of elec- tricity in the ratio of to how will the repulsion between them be affected if for an instant they be brought into contact with one another What is meant by electromotive force State the laws which determine the strength of current which battery of given electromotive force will produce in circuit of given resistance Δ battery of 12 cells is joined up so as to give the strongest current through galvanometer whose resistance is 16 ohms the resistance of each cell of the battery being ohms What is the arrangement of the cells AM Describe some form of DanielPs battery and explain its action Describe the chemical changes which take place when the poles of battery are attached to voltameter Explain method of comparing the electrical resistance of two wires What are the relative resistances of two copper wires one of them 30 48 cm long and weighing 35 grammes and the other 36 58 cm long and weighing 21 grammes Explain the principle of shunt applied to galvano- meter 1" Describe method of comparing the electromotive forces of two batteries Describe the method of determining the magnetic incli- nation at any point of the earth's surface Show how to compare the magnetic moment of magnet with the horizontal magnetic force of the earth 10 Describe and explain the action of Grove's gas battery and point out the explanation which it gives of the action of secondary batteries 11 State the laws of the production and distribution of heat in galvanic circuit Show that the quantity of heat which given battery can produce per unit of time in wire is greatest when the