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GCSEPhysicsOCRPhysics A (Gateway)Exam Questions3. ElectricitySimple Circuits

Simple Circuits (OCR GCSE Physics A (Gateway))

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Simple Circuits

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Simple Circuits

11 mark

Which symbol is used to show an LDR?

q2-paper1-specimen-ocr-gcse-physics

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    21 mark

    A student sets up four different circuits. He uses identical lamps and the same cell.

    Look at the diagrams of his circuits.

    q5-paper1-june2098-ocr-gcse-physics

    Which circuit has the brightest lamp(s)?

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      3
      Sme Calculator      1 mark

      A student sets up the following circuit to investigate the I-V characteristics of a filament lamp.

      Electrical circuit diagram with a battery, an ammeter labelled "A" in series, a light bulb, and a voltmeter "V" in parallel with the bulb.

      What is the independent variable in this investigation?

      • Potential difference

      • Current

      • Resistance

      • Time

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      41 mark

      Look at the circuit diagram.

      file-000-48

      • resistance = potential difference ÷ current

      Calculate the resistance of bulb D.

      • 2 Ω

      • 4 Ω

      • 6 Ω

      • 8 Ω

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      51 mark

      A student investigates how current and potential difference vary in different components.

      Look at the graphs of her results.

      q4-paper1-june2098-ocr-gcse-physics

      Which graph shows a filament lamp?

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        61 mark

        A student investigates how the resistance of a light dependent resistor (LDR) changes with light intensity.

        q10-paper1-oct-nov2020-ocr-gcse-physics

        Which graph shows the correct relationship between the resistance of an LDR and light intensity?

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          7
          Sme Calculator          1 mark

          Which of the following statements about circuit components is correct?

          • For a light dependent resistor, the resistance decreases as light intensity decreases.

          • For a thermistor, the resistance decreases as temperature increases.

          • For a filament lamp, current and potential difference are directly proportional.

          • For a diode, current will only flow in the circuit when the diode is positioned in reverse bias.

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          8
          Sme Calculator          1 mark

          The diagram shows the circuit symbol of a component.

          Electrical circuit symbol showing a rectangle with a diagonal arrow through it.

          Which of the following is an application of this circuit component?

          • Thermometer

          • Dimmer switch

          • Automatic lights

          • Car headlights

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          9
          Sme Calculator          1 mark

          A student set up the following circuit.

          Circuit diagram with a cell, variable resistor, voltmeter, ammeter, lamp, diode, voltmeter and ammeter. The cell is positioned in the centre of the top horizontal wire with the positive terminal facing to the left. Going anti-clockwise, there is a variable resistor followed by a voltmeter in series, then a lamp with an ammeter placed in parallel. After the junction, there is a diode on the vertical wire with arrow facing upward.

          The student has made a number of mistakes in setting up the circuit. Which of the following is a mistake made by the student that also affects the amount of charge flowing around the circuit?

          • The ammeter is placed in parallel.

          • The voltmeter is placed in series.

          • The variable resistor is placed before the lamp.

          • The diode is facing the wrong way.

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          10
          Sme Calculator          1 mark

          Here are some graphs for the potential difference (p.d.) of four electrical supplies.

          Which graph shows a direct voltage?

          q6-paper2-june2098-ocr-gcse-physics-1

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