Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 48
- E\= I{Rl + R2 + R3 + £4) If several conductors are connected in parallel as shown in Fig.24, then the voltage across each conductor is the same while thetotal current is the sum of the currents in the different paths sothat I = h + I2 + h + h (1 J^ _1_ _1_\Ri R2 R3 Ra WWWW- U—E-i-Ji, <… … Fig. 24.—Parallel circuit. Four coils having resistances of 3, 5, 10 and 12 ohms respectively areconnected in series across 120 volts, find the current in the circuit and thevoltage drop across each coil. 120 = 7(3 + 5 + 10 + 12)= 307therefore 7=4 amp . Ei = 4: X 3 = 12 voltsE2 = 4 X 5 = 20 voltsEz…
Electrical engineering
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