Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 150 · 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.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
2. 2.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
3. 3.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
4. 4.True or false: voltage is measured in volts (V). (a) True (b) False
5. 5.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
7. 7.True or false: the voltmeter is joined across a part. (a) False (b) True
8. 8.📏 How many milliamperes (mA) is 0.63 A?
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
10. 10.True or false: the voltmeter measures voltage. (a) True (b) False
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
12. 12.True or false: the ammeter is joined across a part. (a) True (b) False
13. 13.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
14. 14.📏 How many ohms (Ω) is 1.8 kΩ?
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
16. 16.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
17. 17.True or false: the voltmeter measures current. (a) True (b) False
18. 18.True or false: resistance is measured in watts (W). (a) True (b) False
19. 19.True or false: the voltmeter is joined in series. (a) False (b) True
20. 20.📏 How many watts (W) is 0.8 kW?
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
22. 22.📏 How many watts (W) is 3.1 kW?
23. 23.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
24. 24.True or false: energy used each second is measured in amperes (A). (a) False (b) True
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
26. 26.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
27. 27.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) voltage
28. 28.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the push of a cell (d) how much a part resists
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.True or false: the ammeter measures voltage. (a) False (b) True
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
32. 32.True or false: the ammeter measures current. (a) False (b) True
33. 33.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) current (d) how much a part resists
34. 34.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) the flow of charge (d) energy used each second
35. 35.📏 How many amperes (A) is 2160 mA? =
36. 36.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
37. 37.True or false: the push of a cell is measured in volts (V). (a) True (b) False
38. 38.📏 How many ohms (Ω) is 2.7 kΩ?
39. 39.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) resistance (d) current
40. 40.📏 How many milliamperes (mA) is 0.89 A?

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