Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 94 · 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 2600 W? =
2. 2.📏 How many milliamperes (mA) is 1.22 A?
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
5. 5.True or false: the ammeter measures voltage. (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
8. 8.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
9. 9.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
10. 10.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) energy used each second (d) voltage
11. 11.📏 How many watts (W) is 2.5 kW?
12. 12.True or false: the voltmeter is joined in series. (a) False (b) True
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
14. 14.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
15. 15.True or false: power is measured in watts (W). (a) True (b) False
16. 16.True or false: resistance is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many amperes (A) is 10 mA? =
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
19. 19.True or false: the voltmeter measures current. (a) True (b) False
20. 20.📏 How many kilowatts (kW) is 1450 W? =
21. 21.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
22. 22.📏 How many milliamperes (mA) is 0.85 A?
23. 23.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
24. 24.True or false: the ammeter measures current. (a) False (b) True
25. 25.True or false: the ammeter is joined in series. (a) False (b) True
26. 26.📏 How many amperes (A) is 250 mA? =
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
29. 29.📏 How many amperes (A) is 2700 mA? =
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
31. 31.📏 How many kilo-ohms (kΩ) is 100 Ω? =
32. 32.True or false: resistance is measured in volts (V). (a) False (b) True
33. 33.📏 How many amperes (A) is 2210 mA? =
34. 34.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) power (d) current
35. 35.📏 How many amperes (A) is 2000 mA? =
36. 36.📏 How many ohms (Ω) is 7.7 kΩ?
37. 37.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) current (d) how much a part resists
38. 38.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
39. 39.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
40. 40.📏 How many amperes (A) is 1940 mA? =

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