Practical Electricity: a Laboratory And Lecture Course: Illus
Practical Electricity: a Laboratory And Lecture Course: Illus
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In our eReader you can find the full English version of the book. Read Practical Electricity: a Laboratory And Lecture Course: Illus Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Electricity: a Laboratory And Lecture Course: Illus
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— The aWlute capacity of a condenser can be determined in Digitized by VjOOQ IC 328 PRACTICAL ELECTRICITY. [Chap. VIL farads by using a battery, whose E. M. F. we know in volts, to charge it, when there is in the circuit a galvanomet-er which has been calibrated so that the number of coulombs or fraction of a coulomb that causes any particular instantaneous swing is known. But this absolute measurement of a capacity can more easily be effected as follows, the only thing that is required to be p...reviously known being the value of a resistance in ohms.
Let B (right hand, Fig. 125) be a battery of un- known K M. F. and resistance, but of such a large Fig. 125.
number of cells, that when it is used to charge the condenser c, F farads in capacity, a suitable instan- taneous deflection is obtained on a reflecting galvano- meter o. In order that we may use two P. Ds., whose ratio is known, shunt the battery with a large resist- ance r, then if a portion r' (right hand, Fig. 125) of this resistance bears to the whole r, a ratio equal to R, it follows, without our knowing either r or r' in ohms, that V, the P.
What to read after Practical Electricity: a Laboratory And Lecture Course: Illus?
You can find similar books in the "Read Also" column, or choose other free books by W E William Edward Ayrton to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
— The aWlute capacity of a condenser can be determined in Digitized by VjOOQ IC 328 PRACTICAL ELECTRICITY. [Chap. VIL farads by using a battery, whose E. M. F. we know in volts, to charge it, when there is in the circuit a galvanomet-er which has been calibrated so that the number of coulombs or fraction of a coulomb that causes any particular instantaneous swing is known. But this absolute measurement of a capacity can more easily be effected as follows, the only thing that is required to be p...reviously known being the value of a resistance in ohms.
Let B (right hand, Fig. 125) be a battery of un- known K M. F. and resistance, but of such a large Fig. 125.
number of cells, that when it is used to charge the condenser c, F farads in capacity, a suitable instan- taneous deflection is obtained on a reflecting galvano- meter o. In order that we may use two P. Ds., whose ratio is known, shunt the battery with a large resist- ance r, then if a portion r' (right hand, Fig. 125) of this resistance bears to the whole r, a ratio equal to R, it follows, without our knowing either r or r' in ohms, that V, the P.
What to read after Practical Electricity: a Laboratory And Lecture Course: Illus?
You can find similar books in the "Read Also" column, or choose other free books by W E William Edward Ayrton to read onlineMoreLess
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