IGCSE Physics (0625) Unit 4 Electricity and magnetism-4.3.2 Series and parallel circuits Paper 1 IGCSE Physics (0625) Paper 1 - All Chapters QuestionDiagram 1 shows a resistor connected in a circuit. Diagram 2 shows an identical resistor connected in parallel with the first one.What is the combined resistance of the two resistors?greater than in the circuit of diagram 1less than in the circuit of diagram 1the same as in the circuit of diagram 1zeroAnswer/ExplanationAns: B QuestionThe current in a lamp connected on its own to the mains supply is 0.60 A. A table decoration has three of these lamps connected in parallel.Which rating of fuse is suitable to protect this circuit?A 0.2 AB 0.6 AC 1.0 AD 5.0 AAnswer/ExplanationAns: D QuestionThe diagrams show different resistor arrangements.Which arrangement has the smallest combined resistance? Answer/ExplanationAns: A QuestionLamps in a circuit are connected in parallel.What is the advantage of this?If one lamp breaks, the others remain lit.Less current is taken from the power supply.The lamps use less power than if they were connected in series.The potential difference across each lamp is less than that of the power supply.Answer/ExplanationAns: A QuestionIn the circuits shown, each of the resistors has a resistance of 1.0 Ω. Which circuit has the greatest resistance?Answer/ExplanationAns: C ...MORE IGCSE PHY Paper 1 Questions