Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 223
FiG. 256—Electric bell and its connections.At G is shown a section of the push-button. The figure shows the bell whenthe button is not pressed. The currentmay pass in either direction through thebell. arated from the screw C, and thecircuit is broken at this point.The magnet then releases the…
Physics
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