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GCSEPhysicsOCRPhysics A (Gateway)Exam Questions3. ElectricitySeries & Parallel Circuits

Series & Parallel Circuits (OCR GCSE Physics A (Gateway))

Exam Questions

53 mins15 questions

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Series & Parallel Circuits

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Series & Parallel Circuits

11 mark

What is the current at point P in the circuit?

q2-paper3-june2018-ocr-gcse-physics

  • 0.5 A

  • 7.5 A

  • 15.0 A

  • 20.5 A

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21 mark

Which voltage is the maximum voltage made when four 1.5 V cells are connected in series?

  • 0 V

  • 1.5 V

  • 3.0 V

  • 6.0 V

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31 mark

This is a circuit.

q6-paper1-june2018-ocr-gcse-physics

Which letter A, B, C or D shows the part of the circuit that carries a current of 2A?

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    41 mark

    A student has 3 identical resistors. She arranges them in four different ways.

    q7-paper1-june2018-ocr-gcse-physics

    Which arrangement has the most resistance?

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      51 mark

      The table shows the current and potential difference for four different lamps.

      Which lamp has the highest power?

      Use the equation: power = potential difference × current

       

      Current (A)

      Potential difference (V)

      A

      2

      5

      B

      3

      4

      C

      4

      2

      D

      5

      1

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        61 mark

        Which item uses the most power?

        Use the equation: power = potential difference × current

         

        Item

        Current (A)

        Potential difference (V)

        A

        Calculator

        0.1

        3

        B

        Mobile Phone

        1.0

        5

        C

        Radio

        0.5

        12

        D

        Torch

        1.2

        6

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          71 mark

          The current in a 12 Ω resistor is 9.0 A.

          How much power is dissipated?

          • 108 W

          • 972 W

          • 1 296 W

          • 11 664 W

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          8
          Sme Calculator          1 mark

          Which of the following is correct for series and parallel circuits?

          Series

          Parallel

          A

          Current is the same at all positions

          Potential difference split between branches

          B

          Potential difference is split between components

          Current is split between branches

          C

          Current is the same at all positions

          Total resistance is the sum of the individual resistors

          D

          Potential difference is the same at all positions

          Adding resistors increases the total resistance of the circuit

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            91 mark

            Calculate the power dissipated by resistor R.

            file-000-52

            • 3 W

            • 12 W

            • 15 W

            • 30 W

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            10
            Sme Calculator            1 mark

            All the lamps in the diagrams above are identical. Each one is rated as ‘10 W, 230 V’.

            In which of the diagrams are all the lamps working at their normal brightness?

            Four electrical circuit diagrams labeled A to D, each with lamp connected differently to a 230V power source. Circuit A is a parallel circuit with a lamp before the junction, a lamp in each branch, and a lamp after the junction. Circuit B is a parallel circuit with no bulbs before or after the junction, and two lamps in each branch. Circuit C is a series circuit containing four lamps. Circuit D is a parallel circuit with four branches, each of which has one lamp.

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