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The diagram in Fig. 2 represents an electric circuit in which five resistors are connected to be a battery of e.m.f. 4.0 V and of negligible internal resistance.
Determine:
(i) The total resistance of the circuit. (ii) The current flowing through the 5.5#Omega# resistor. (iii) The potentials at points Y and Q. (iv) The potential difference between Y and Q.