Calendar: 1885-1886 Page 695

general literature and science G87 "What is the nature of the action of the Earth magnetic force on freely suspended magnetic needle Describe method of measuring the horizontal magnetic force of the Earth Describe the Declination compass Explain how to determine the true magnetic declination shewing how to eliminate the errors arising from any defect in the compass needle Describe Oersted's experiment and explain how it has been made use of to measure the strength of electric currents How may the absolute value of the indications of tangent galvanometer be determined Describe Daniell's cell When current from five DanielPs cells is sent through voltameter containing acidulated water describe the chemical changes which take place in the cells of the battery and in the voltameter and state the relation which exists between them at two opposite corners and of the square determine what effect will be produced by joining either and JD or and by straight piece of the same copper wire jfine the term electromotive force Explain method Define the term "electromotive force of comparing the electromotive forces of two batteries Describe experiments illustrating the nature of the current induced in closed circuit by means of magnet What effect will be produced in hollow coil of wire forming closed circuit by passing magnet through the coil along its axis 10 State the laws of the production and distribution of heat in galvanic circuit Explain the principle of Cardew's voltmeter and shew how electromotive forces are measured by it 11 Describe and prove the principle of Mance's method for determining the internal resistance of batteries