Explain the theory of a) series and b) parallel combinations of resistance in an electric circuit.
You are given 2 wires each of the resistance R. What is the ratio of maximum to the minimum resistance that can be obtained form these wires?
Resistors R1 and R2 are connected in series to an emf source that has negligible internal resistance. What happens to the current through R1 when a third resistor R3 is connected in parallel with R2?
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