Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Energy and Voltage in Circuits
16 practice questions
Practice questions
1–10 of 16
Question 1
1 mark · Easy
Answer and see the solution →State what is meant by the term "voltage" in an electric circuit.
Question 2
2 marks · Easy
Answer and see the solution →A current of 2 A flows through a circuit for 10 seconds. Calculate the total charge that passes through the circuit.
Question 3
1 mark · Easy
Answer and check →Which statement correctly describes what happens to the brightness of lamps if more identical lamps are added in parallel to a circuit with one battery?
- A.All lamps become brighter.
- B.All lamps become dimmer.
- C.The brightness stays the same for each lamp.
- D.Only the first lamp lights up.
Question 4
1 mark · Easy
Answer and see the solution →State what kind of charge carriers are responsible for electric current in a metal wire.
Question 5
3 marks · Easy
Answer and see the solution →A circuit is shown below with a 6 V battery and two resistors, R1 = 3 Ω and R2 = 9 Ω, connected in series.
(a)[1 mark]Calculate the total resistance of the circuit.
(b)[1 mark]Calculate the current in the circuit.
(c)[1 mark]Calculate the voltage across resistor R1.
Question 6
2 marks · Easy
Answer and see the solution →Explain why, in a series circuit, if one lamp goes out, all the others go out as well.
Question 7
2 marks · Easy
Answer and see the solution →Describe how you could use an LED to check if there is a current present in a circuit. Include what you would expect to see.
Question 8
2 marks · Easy
Answer and see the solution →An electric kettle has a current of 6.0 A flowing when connected across a 240 V supply. Calculate the resistance of the kettle.
Question 9
1 mark · Normal
Answer and check →Which statement correctly describes what happens to the current in a series circuit when the resistance is increased?
- A.The current increases.
- B.The current decreases.
- C.The current remains the same.
- D.The current becomes zero.
Question 10
4 marks · Normal
Answer and see the solution →A circuit contains a battery and two resistors, R1 and R2, connected in series. R1 = 4 Ω and R2 = 8 Ω. The battery supplies a voltage of 12 V.
(a)[1 mark]Calculate the total resistance in the circuit.
(b)[2 marks]Calculate the current in the circuit.
(c)[1 mark]Calculate the voltage across R2.