Calendar: 1876-1877 Page 605

ENGINEERING AND APPLIED SCIENCES 605 SECOND AND THIRD YEARS Descriee experiments which show that the free electricity on charged body is entirely upon its surface What conclu- sions may be drawn from these experiments as to the laws of electrical attraction and repulsion Describe Coulomb's Torsion Balance Explain how to employ it to determine the laws of attraction of two small spheres charged with opposite kinds of electricity How will the result be affected by the size of the spheres Define "lines of force "capacity of conductor po- tential at point Describe method of determining the potential at any point near to but not in electrical connection with the earth's surface Explain how to determine the magnetic inclination at any point of the earth's surface declination needle ma es 32 oscillations at place where the inclination is 6U in the same time as it makes 36 oscillations at place where the inclinaton is the angle whose cosine is compare the magnetic intensities at the two places Shew how to compare the power of magnet with the magnetic force of the earth How far would your method be applicable in the neighbour- hood of tlie earth's magnetic pole Describe Wheatstone's method of comparing the electro- motive forces of two batteries Describe some form of Darnell's battery and explain its action What chemical effects are produced when the poles ot the battery are attached to voltameter Describe method of comparing the electrical resistance of two wives and explain the principle of the method What are the relative resistances of two copper wires one of them 16 feet long and weighing 56 grammes the other feet long and weighing 25 gramnus Describe method of determining the position of fault