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3.2 Simple circuits

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Question 25
H

A second resistor is connected in series with a resistor in a circuit.

Which statement explains why the total resistance of the circuit increases?

[1]
A

The current is shared between the two resistors, so each resistor carries less charge

B

All of the charge must pass through both resistors, so there is more opposition to its flow

C

The potential difference across the first resistor increases, so the current must fall

D

The charge now has two separate paths, so less charge flows through each resistor

Markscheme

3.2 Simple circuits Questions

  1. GCSE
  2. /Physics
  3. /3.2 Simple circuits

42 exam-style questions on OCR GCSE Physics 3.2 Simple circuits, covering 3.2.1 Series and parallel circuits, 3.2.2 Circuit symbols and circuit diagrams, 3.2.3 Current, potential difference and resistance, 3.2.4 Ohm's law, 3.2.5 Ohmic and non-ohmic resistors, 3.2.6 Designing circuits to investigate resistance, 3.2.7 Linear and non-linear circuit components, 3.2.8 Current-potential difference graphs for components, 3.2.9 Resistance in series and parallel, 3.2.10 Series and parallel circuit problems, 3.2.11 Circuits for measurement and testing, 3.2.12 Power transfer in circuit devices, and 3.2.13 Energy and power in resistor circuits. Each one has a worked solution and a mark scheme showing where the marks go.

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