Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 210 · 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.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.True or false: the ammeter measures voltage. (a) False (b) True
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) current
5. 5.📏 How many kilowatts (kW) is 1200 W? =
6. 6.📏 How many ohms (Ω) is 4.1 kΩ?
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.True or false: current is measured in amperes (A). (a) True (b) False
9. 9.📏 How many watts (W) is 1.2 kW?
10. 10.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) voltage (d) current
11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
12. 12.📏 How many ohms (Ω) is 2.1 kΩ?
13. 13.📏 How many milliamperes (mA) is 0.73 A?
14. 14.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
16. 16.True or false: resistance is measured in ohms (Ω). (a) True (b) False
17. 17.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) energy used each second (d) the push of a cell
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
19. 19.📏 How many amperes (A) is 1530 mA? =
20. 20.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
21. 21.True or false: current is measured in ohms (Ω). (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 0.25 A?
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
26. 26.True or false: energy used each second is measured in volts (V). (a) False (b) True
27. 27.📏 How many watts (W) is 1.8 kW?
28. 28.📏 How many watts (W) is 0.1 kW?
29. 29.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
30. 30.True or false: energy used each second is measured in watts (W). (a) False (b) True
31. 31.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.📏 How many kilo-ohms (kΩ) is 900 Ω? =
34. 34.True or false: power is measured in amperes (A). (a) False (b) True
35. 35.📏 How many ohms (Ω) is 7.3 kΩ?
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
38. 38.📏 How many ohms (Ω) is 3.3 kΩ?
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure

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