Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 589 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.True or false: the ammeter measures current. (a) True (b) False
2. 2.True or false: current is measured in amperes (A). (a) False (b) True
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
4. 4.📏 How many watts (W) is 3.7 kW?
5. 5.📏 How many ohms (Ω) is 9.6 kΩ?
6. 6.📏 How many amperes (A) is 1110 mA? =
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) current (d) voltage
10. 10.📏 How many ohms (Ω) is 0.3 kΩ?
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.True or false: the voltmeter measures voltage. (a) False (b) True
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
15. 15.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
16. 16.True or false: current is measured in ohms (Ω). (a) False (b) True
17. 17.True or false: the voltmeter is joined in series. (a) True (b) False
18. 18.True or false: current is measured in watts (W). (a) False (b) True
19. 19.True or false: voltage is measured in volts (V). (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
21. 21.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
22. 22.True or false: the voltmeter measures current. (a) True (b) False
23. 23.True or false: energy used each second is measured in watts (W). (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.📏 How many ohms (Ω) is 0.4 kΩ?
26. 26.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
27. 27.📏 How many milliamperes (mA) is 2.6 A?
28. 28.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) the flow of charge (d) voltage
29. 29.True or false: power is measured in watts (W). (a) True (b) False
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
32. 32.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
33. 33.📏 How many kilowatts (kW) is 3350 W? =
34. 34.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
35. 35.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) the push of a cell (d) resistance
36. 36.True or false: the ammeter is joined in series. (a) False (b) True
37. 37.True or false: voltage is measured in amperes (A). (a) False (b) True
38. 38.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) current (d) the push of a cell
39. 39.📏 How many amperes (A) is 30 mA? =
40. 40.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)

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