Engineering, 11.03.2020 03:21 leriscepowell9004
An electronic toy is powered by three 1.58-V alkaline cells, each with an internal resistance of 0.0205 Ω, and a 1.53-V carbon-zinc dry cell, whose internal resistance is 0.105 Ω. All four cells are connected in series as part of a single-loop circuit. The resistance of the rest of the circuit is 6.625 Ω.
(a) What current, 1, in amperes, flows through the toy's circuit?
(b) How much power, P, in watts, is supplied to the toy?
(c) The dry cell fails in such a way that it maintains its emf while its internal resistance increases greatly. That results in a reduced power of only 0.500 W supplied to the toy. What is the internal resistance, r2,failing, in ohms, of the failed dry cell?
Answers: 3
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An electronic toy is powered by three 1.58-V alkaline cells, each with an internal resistance of 0.0...
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