Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 30 · 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 milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
2. 2.True or false: resistance is measured in ohms (Ω). (a) False (b) True
3. 3.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
4. 4.📏 How many amperes (A) is 410 mA? =
5. 5.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
7. 7.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.True or false: power is measured in volts (V). (a) True (b) False
10. 10.📏 How many milliamperes (mA) is 1.74 A?
11. 11.True or false: resistance is measured in watts (W). (a) False (b) True
12. 12.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) power (d) how much a part resists
13. 13.True or false: the voltmeter measures current. (a) False (b) True
14. 14.📏 How many milliamperes (mA) is 1.98 A?
15. 15.True or false: current is measured in ohms (Ω). (a) True (b) False
16. 16.True or false: the voltmeter is joined across a part. (a) True (b) False
17. 17.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
18. 18.📏 How many milliamperes (mA) is 2.11 A?
19. 19.📏 How many ohms (Ω) is 2.2 kΩ?
20. 20.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
21. 21.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
23. 23.📏 How many amperes (A) is 2870 mA? =
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
25. 25.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) energy used each second (d) how much a part resists
26. 26.True or false: energy used each second is measured in amperes (A). (a) False (b) True
27. 27.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
28. 28.True or false: the voltmeter measures voltage. (a) True (b) False
29. 29.True or false: the ammeter is joined in series. (a) True (b) False
30. 30.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) voltage (d) power
31. 31.True or false: voltage is measured in volts (V). (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
34. 34.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
35. 35.📏 How many ohms (Ω) is 6.7 kΩ?
36. 36.True or false: current is measured in watts (W). (a) True (b) False
37. 37.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
38. 38.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
39. 39.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the push of a cell (d) the flow of charge
40. 40.True or false: the flow of charge is measured in amperes (A). (a) True (b) False

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