Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 260 · 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 amperes (A) is 1120 mA? =
2. 2.True or false: energy used each second is measured in watts (W). (a) True (b) False
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
4. 4.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
6. 6.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
7. 7.True or false: voltage is measured in amperes (A). (a) True (b) False
8. 8.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) resistance
9. 9.True or false: power is measured in amperes (A). (a) False (b) True
10. 10.True or false: power is measured in ohms (Ω). (a) False (b) True
11. 11.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) current
12. 12.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) the push of a cell (d) power
13. 13.True or false: power is measured in watts (W). (a) False (b) True
14. 14.True or false: the voltmeter is joined in series. (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 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
17. 17.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
20. 20.True or false: the voltmeter measures voltage. (a) True (b) False
21. 21.True or false: the ammeter measures current. (a) False (b) True
22. 22.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
24. 24.📏 How many ohms (Ω) is 2 kΩ?
25. 25.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
26. 26.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
27. 27.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
28. 28.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
29. 29.True or false: the ammeter measures voltage. (a) False (b) True
30. 30.📏 How many amperes (A) is 640 mA? =
31. 31.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
33. 33.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
34. 34.True or false: the push of a cell is measured in volts (V). (a) True (b) False
35. 35.True or false: voltage is measured in volts (V). (a) True (b) False
36. 36.True or false: power is measured in volts (V). (a) True (b) False
37. 37.📏 How many ohms (Ω) is 1.9 kΩ?
38. 38.📏 How many amperes (A) is 730 mA? =
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) the push of a cell (d) power
40. 40.📏 How many amperes (A) is 1100 mA? =

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