International A Level (IAL)PhysicsEdexcelExam Questions2. Waves & ElectricityCurrent, Potential Difference, Resistance & Power

Current, Potential Difference, Resistance & Power (Edexcel International A Level (IAL) Physics): Exam Questions

Exam code: YPH11

46 mins13 questions

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Current, Potential Difference, Resistance & Power

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1
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1 mark

A graph of current against potential difference for an electrical component is shown.

q6-wph12-02-june-2021-edexcel-int-as-a-level-phy

Which component would give this graph?

  • diode

  • filament bulb

  • ohmic conductor

  • thermistor

Choose your answer

2
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1 mark

Which of the following units is equivalent to the volt?

  • J s–1

  • W s–1

  • J C–1

  • W C–1

Choose your answer

3
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1 mark

The graph shows how potential difference V varies with current I for an electrical component.

q1-wph12-02-oct-2021-edexcel-int-as-and-a-level-phy

Which electrical component is represented by this graph?

  • diode

  • filament lamp

  • ohmic conductor

  • thermistor

Choose your answer

4
1 mark

The unit of electric potential can be written as J C−1.

Which of the following is the equivalent expression in SI base units?

  • kg m2 s−2

  • kg m2 s−2 A−1

  • kg m2 s−3 A−1

  • kg m s−3 A−1

Choose your answer

5
1 mark

The graph shows how the potential difference V varies with the current I for a circuit component.

Graph of potential difference V against current I showing a curve passing through the origin, very flat at low I, then curving steeply upwards as I increases.

Which of the following could be the circuit component?

  • ohmic resistor

  • filament lamp

  • thermistor

  • diode

Choose your answer

1
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1 mark

The unit of resistance is the ohm.

Which of the following is equivalent to the ohm?

  • J C−2 s

  • J C2 s−1

  • J C−1 s−1

  • J C s

Choose your answer

2
1 mark

Which of the following derived units can be expressed in SI base units as kg m2 s–3 ?

  • coulomb

  • joule

  • volt

  • watt

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3
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1 mark

The graph shows how current I varies with potential difference V for an electrical component.

q8-wph12-02-jan-2022-edexcel-int-as-a-level-phy

Which component is represented by this graph?

  • Diode

  • Filament lamp

  • Ohmic conductor

  • Thermistor

Choose your answer

4
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1 mark

A light dependent resistor (LDR) and a fixed resistor are connected in a circuit, as shown.

q10-wph12-02-jan-2022-edexcel-int-as-a-level-phy

The intensity of the light incident on the LDR is increased.

Which of the following does not take place as the light intensity is increased?

  • The current in the circuit increases.

  • The potential difference across the fixed resistor increases.

  • The total power dissipated in the circuit decreases.

  • The resistance of the LDR decreases.

Choose your answer