Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 433 · 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 kilowatts (kW) is 4250 W? =
2. 2.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
3. 3.📏 How many amperes (A) is 1500 mA? =
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
5. 5.True or false: the ammeter measures current. (a) True (b) False
6. 6.True or false: how much a part resists is measured in volts (V). (a) True (b) False
7. 7.📏 How many watts (W) is 0.3 kW?
8. 8.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
10. 10.📏 How many ohms (Ω) is 9.3 kΩ?
11. 11.📏 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
12. 12.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) voltage (d) the push of a cell
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
18. 18.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
20. 20.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
23. 23.📏 How many amperes (A) is 390 mA? =
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 1.9 A?
26. 26.📏 How many watts (W) is 3.5 kW?
27. 27.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) current (d) power
28. 28.True or false: the ammeter measures voltage. (a) False (b) True
29. 29.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.📏 How many amperes (A) is 420 mA? =
32. 32.📏 How many watts (W) is 3.7 kW?
33. 33.📏 How many amperes (A) is 2190 mA? =
34. 34.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) current
35. 35.📏 How many milliamperes (mA) is 1.41 A?
36. 36.True or false: the voltmeter is joined in series. (a) False (b) True
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
39. 39.True or false: voltage is measured in watts (W). (a) True (b) False
40. 40.True or false: the voltmeter measures current. (a) False (b) True

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