Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Units (Electricity)
87 practice questions
Topics covered
Practice questions
21–30 of 43 · Easy
Question 21
2 marks · Easy
Answer and see the solution →A small electric pump transfers 4800 J of energy in 4 minutes. Calculate the power of the pump.
Question 22
2 marks · Easy
Answer and see the solution →A 30 W charger is used for 2 hours.
(a)[2 marks]Calculate the total energy transferred in joules.
Question 23
1 mark · Easy
Answer and check →Which device supplies alternating current (a.c.) in a home?
- A.A torch battery
- B.A solar cell
- C.The mains electricity socket
- D.A chemical cell
Question 24
1 mark · Easy
Answer and see the solution →State the equation linking energy transferred (E), power (P), and time (t) in an electric circuit.
Question 25
1 mark · Easy
Answer and see the solution →State the unit used to measure electrical resistance.
Question 26
1 mark · Easy
Answer and check →Which of these is the correct symbol for the unit of resistance?
- A.Ω
- B.R
- C.A
- D.V
Question 27
2 marks · Easy
Answer and see the solution →Describe what is meant by the resistance of a component in an electrical circuit.
Question 28
1 mark · Easy
Answer and check →Which of the following circuits would have the greatest total resistance?
Three circuits showing resistors in series and in parallel. - A.A single 10 Ω resistor in series with a cell
- B.Two 5 Ω resistors in parallel with a cell
- C.Two 5 Ω resistors in series with a cell
- D.A cell with no resistors
Question 29
2 marks · Easy
Answer and see the solution →A buzzer in a circuit is connected to a 6 V battery and the current flowing is 0.5 A. Calculate the resistance of the buzzer. Give your answer with the correct unit.
Question 30
3 marks · Easy
Answer and see the solution →The diagram shows a circuit containing a 9 V battery and two resistors, each of 3 Ω, connected in series.
Series circuit: battery (9 V) and two resistors (each 3 Ω) (a)[1 mark]State the total resistance in the circuit.
(b)[2 marks]Calculate the current flowing through the circuit.