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The Pamphlet Collection of Sir Robert Stout: Volume 50

The University of New Zealand. — Entrance Examination, 1885—Junior Scholarships. — Electricity

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The University of New Zealand.

Entrance Examination, 1885—Junior Scholarships.


1.Describe a gold-leaf electroscope. State how you would determine the kind of electricity in a body by its means. Many electroscopes and electrometers have a fixed charge of electricity. State the advantage of such instruments.
2.Describe the distribution of electricity on a cone, a sphere, and on a disc. Is the potential the same at all points of a charged cone?
3.Describe fully the action of the points in an electric machine and in lightning conductors. Has heat any effect upon the action of points?
4.Describe some form of continuous electric machine in which induction instead of friction develops electricity.
5.Describe various simple ways of producing a current of electricity. What is the especial advantage of a Groves' battery?
6.What are the several ways in which a current of electricity may be made to show itself? What are the laws of electrolysis?
7.Describe and state the properties of an electro-magnet and describe some form of electro-magnetic engine.
8.Give an account of experiments to illustrate the elementary principles of magneto electricity. Describe Bell's telephone.
9.How is the resistance of a wire usually measured? State Ohm's law, and make a sketch of the arrangements of Wheatstone's bridge.
10.Describe any form of dynamo such as is used for producing the electric light.