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Connected to a battery that offers a d. d.p. of 3.0Volts, we have the four lamps, all identical with resistances equal to 2.0 Ohms. The association appears in the figure. Note that the switch is open, so it doesn't pass current in the circuit (it's like an off switch). When the key closes, the lamps come on. Determining the Req of the association and the total current flowing through the circuit, we will find:
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Connected to a battery that offers a d. d.p. of 3.0Volts, we have the four lamps, all identical with...
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