Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 864 · 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 the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
4. 4.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
5. 5.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) current (d) energy used each second
6. 6.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
7. 7.📏 How many amperes (A) is 1310 mA? =
8. 8.📏 How many watts (W) is 3.1 kW?
9. 9.True or false: the ammeter is joined across a part. (a) True (b) False
10. 10.True or false: the voltmeter is joined across a part. (a) False (b) True
11. 11.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) the push of a cell (d) power
12. 12.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
13. 13.True or false: current is measured in watts (W). (a) True (b) False
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.True or false: resistance is measured in watts (W). (a) False (b) True
17. 17.📏 How many kilowatts (kW) is 3100 W? =
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
19. 19.True or false: the voltmeter measures current. (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
21. 21.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) power (d) energy used each second
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
24. 24.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
25. 25.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
26. 26.True or false: voltage is measured in volts (V). (a) True (b) False
27. 27.📏 How many milliamperes (mA) is 2.6 A?
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
29. 29.True or false: how much a part resists is measured in volts (V). (a) True (b) False
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: power is measured in amperes (A). (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) voltage (d) how much a part resists
33. 33.📏 How many ohms (Ω) is 0.9 kΩ?
34. 34.📏 How many amperes (A) is 330 mA? =
35. 35.📏 How many amperes (A) is 1430 mA? =
36. 36.True or false: the ammeter measures current. (a) False (b) True
37. 37.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
38. 38.📏 How many amperes (A) is 2940 mA? =
39. 39.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) current (d) the flow of charge
40. 40.📏 How many watts (W) is 4.6 kW?

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