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Circuits - series and parallel

Q5. The circuit shown below shows an arrangement of resistors, W, X, Y, Z, connected to a battery of negligible internal resistance. The emf of the battery is 10V and the reading on the ammeter is 2.0 A.

(a)

(i) Calculate the total resistance of the circuit.

(1 mark)

(ii) The resistors W, X, Y, and Z all have the same resistance. Show that your answer to part (a) (i) is consistent with the resistance of each resistor being 3.0 Ω.

(3 marks)

(b)

(i) Calculate the current through resistor Y

(2 marks)

(ii) Calculate the pd across resistor W.

(2 marks)

(Total 8 marks)